task_url stringlengths 30 116 | task_name stringlengths 2 86 | task_description stringlengths 0 14.4k | language_url stringlengths 2 53 | language_name stringlengths 1 52 | code stringlengths 0 61.9k |
|---|---|---|---|---|---|
http://rosettacode.org/wiki/Van_der_Corput_sequence | Van der Corput sequence | When counting integers in binary, if you put a (binary) point to the righEasyLangt of the count then the column immediately to the left denotes a digit with a multiplier of
2
0
{\displaystyle 2^{0}}
; the digit in the next column to the left has a multiplier of
2
1
{\displaystyle 2^{1}}
; and so o... | #REXX | REXX | /*REXX program converts an integer (or a range) ──► a Van der Corput number in base 2.*/
numeric digits 1000 /*handle almost anything the user wants*/
parse arg a b . /*obtain the optional arguments from CL*/
if a=='' then parse value 0 10 with a b... |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
Th... | #M2000_Interpreter | M2000 Interpreter |
Module CheckIt {
Function decodeUrl$(a$) {
DIM a$()
a$()=Piece$(a$, "%")
if len(a$())=1 then =str$(a$):exit
k=each(a$(),2)
\\ convert to one byte per character using str$(string)
acc$=str$(a$(0))
While k {
... |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
Th... | #Maple | Maple | StringTools:-Decode("http%3A%2F%2Ffoo%20bar%2F", encoding=percent); |
http://rosettacode.org/wiki/UPC | UPC | Goal
Convert UPC bar codes to decimal.
Specifically:
The UPC standard is actually a collection of standards -- physical standards, data format standards, product reference standards...
Here, in this task, we will focus on some of the data format standards, with an imaginary physical+electrical implementati... | #Nim | Nim | import algorithm, sequtils, strutils
const
LeftDigits = [" ## #",
" ## #",
" # ##",
" #### #",
" # ##",
" ## #",
" # ####",
" ### ##",
" ## ###",
" # ##"]
... |
http://rosettacode.org/wiki/Update_a_configuration_file | Update a configuration file | We have a configuration file as follows:
# This is a configuration file in standard configuration file format
#
# Lines begininning with a hash or a semicolon are ignored by the application
# program. Blank lines are also ignored by the application program.
# The first word on each non comment line is the configurati... | #Racket | Racket |
#lang racket
(require "options.rkt")
(read-options "options-file")
(define-options needspeeling seedsremoved numberofbananas numberofstrawberries)
;; Disable the needspeeling option (using a semicolon prefix)
(set! needspeeling #f)
;; Enable the seedsremoved option by removing the semicolon and any
;; leading... |
http://rosettacode.org/wiki/Update_a_configuration_file | Update a configuration file | We have a configuration file as follows:
# This is a configuration file in standard configuration file format
#
# Lines begininning with a hash or a semicolon are ignored by the application
# program. Blank lines are also ignored by the application program.
# The first word on each non comment line is the configurati... | #Raku | Raku | conf-update --/needspeeling --seedsremoved --numberofbananas=1024 --numberofstrawberries=62000 test.cfg |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Icon_and_Unicon | Icon and Unicon |
procedure main ()
writes ("Enter something: ")
s := read ()
write ("You entered: " || s)
writes ("Enter 75000: ")
if (i := integer (read ())) then
write (if (i = 75000) then "correct" else "incorrect")
else write ("you must enter a number")
end
|
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Io | Io | string := File clone standardInput readLine("Enter a string: ")
integer := File clone standardInput readLine("Enter 75000: ") asNumber |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #Perl | Perl | use Wx;
package MyApp;
use base 'Wx::App';
use Wx qw(wxHORIZONTAL wxVERTICAL wxALL wxALIGN_CENTER);
use Wx::Event 'EVT_BUTTON';
our ($frame, $text_input, $integer_input);
sub OnInit
{$frame = new Wx::Frame
(undef, -1, 'Input window', [-1, -1], [250, 150]);
my $panel = new Wx::Panel($frame, -1);
... |
http://rosettacode.org/wiki/UTF-8_encode_and_decode | UTF-8 encode and decode | As described in UTF-8 and in Wikipedia, UTF-8 is a popular encoding of (multi-byte) Unicode code-points into eight-bit octets.
The goal of this task is to write a encoder that takes a unicode code-point (an integer representing a unicode character) and returns a sequence of 1-4 bytes representing that character in the... | #Python | Python |
#!/usr/bin/env python3
from unicodedata import name
def unicode_code(ch):
return 'U+{:04x}'.format(ord(ch))
def utf8hex(ch):
return " ".join([hex(c)[2:] for c in ch.encode('utf8')]).upper()
if __name__ == "__main__":
print('{:<11} {:<36} {:<15} {:<15}'.format('Character', 'Name', 'Unicode', 'U... |
http://rosettacode.org/wiki/UTF-8_encode_and_decode | UTF-8 encode and decode | As described in UTF-8 and in Wikipedia, UTF-8 is a popular encoding of (multi-byte) Unicode code-points into eight-bit octets.
The goal of this task is to write a encoder that takes a unicode code-point (an integer representing a unicode character) and returns a sequence of 1-4 bytes representing that character in the... | #Racket | Racket | #lang racket
(define char-map
'((LATIN-CAPITAL-LETTER-A . #\U0041)
(LATIN-SMALL-LETTER-O-WITH-DIAERESIS . #\U00F6)
(CYRILLIC-CAPITAL-LETTER-ZHE . #\U0416)
(EURO-SIGN . #\U20AC)
(MUSICAL-SYMBOL-G-CLEF . #\U1D11E)))
(for ((name.char (... |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
Fo... | #Oberon-2 | Oberon-2 |
MODULE URLEncoding;
IMPORT
Out := NPCT:Console,
ADT:StringBuffer,
URI := URI:String;
VAR
encodedUrl: StringBuffer.StringBuffer;
BEGIN
encodedUrl := NEW(StringBuffer.StringBuffer,512);
URI.AppendEscaped("http://foo bar/","",encodedUrl);
Out.String(encodedUrl.ToString());Out.Ln
END URLEncoding.
|
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
Fo... | #Objeck | Objeck |
use FastCgi;
bundle Default {
class UrlEncode {
function : Main(args : String[]) ~ Nil {
url := "http://foo bar/";
UrlUtility->Encode(url)->PrintLine();
}
}
}
|
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Lambdatalk | Lambdatalk |
1) working in a global scope
{def A 3}
-> A // A is in the global scope
{def B 4}
-> B // B is in the global scopel
{def MUL {lambda {:x :y} {* :x :y}}}
-> MUL // MUL is a global function
{MUL {A} {B}} ... |
http://rosettacode.org/wiki/Van_Eck_sequence | Van Eck sequence | The sequence is generated by following this pseudo-code:
A: The first term is zero.
Repeatedly apply:
If the last term is *new* to the sequence so far then:
B: The next term is zero.
Otherwise:
C: The next term is how far back this last term occured previously.
Example
Using ... | #SNOBOL4 | SNOBOL4 | define('eck(n)i,j') :(eck_end)
eck eck = array(n,0)
i = 0
eouter i = lt(i,n - 1) i + 1 :f(return)
j = i
einner j = gt(j,0) j - 1 :f(eouter)
eck<i + 1> = eq(eck<i>,eck<j>) i - j :s(eouter)f(einner)
eck_end
defi... |
http://rosettacode.org/wiki/Van_Eck_sequence | Van Eck sequence | The sequence is generated by following this pseudo-code:
A: The first term is zero.
Repeatedly apply:
If the last term is *new* to the sequence so far then:
B: The next term is zero.
Otherwise:
C: The next term is how far back this last term occured previously.
Example
Using ... | #Sidef | Sidef | func van_eck(n) {
var seen = Hash()
var seq = [0]
var prev = seq[-1]
for k in (1 ..^ n) {
seq << (seen.has(prev) ? (k - seen{prev}) : 0)
seen{prev} = k
prev = seq[-1]
}
seq
}
say van_eck(10)
say van_eck(1000).slice(991-1, 1000-1) |
http://rosettacode.org/wiki/Variadic_function | Variadic function | Task
Create a function which takes in a variable number of arguments and prints each one on its own line.
Also show, if possible in your language, how to call the function on a list of arguments constructed at runtime.
Functions of this type are also known as Variadic Functions.
Related task
Call a function... | #Ring | Ring |
# Project : Variadic function
sum([1,2])
sum([1,2,3])
nums = [1,2,3,4]
sum(nums)
func sum(nums)
total = 0
for num = 1 to len(nums)
total = total + num
next
showarray(nums)
see " " + total + nl
func showarray(vect)
see "["
svect = ""
for n = 1 to... |
http://rosettacode.org/wiki/Variadic_function | Variadic function | Task
Create a function which takes in a variable number of arguments and prints each one on its own line.
Also show, if possible in your language, how to call the function on a list of arguments constructed at runtime.
Functions of this type are also known as Variadic Functions.
Related task
Call a function... | #Ruby | Ruby | def print_all(*things)
puts things
end |
http://rosettacode.org/wiki/Variadic_function | Variadic function | Task
Create a function which takes in a variable number of arguments and prints each one on its own line.
Also show, if possible in your language, how to call the function on a list of arguments constructed at runtime.
Functions of this type are also known as Variadic Functions.
Related task
Call a function... | #Rust | Rust | // 20220106 Rust programming solution
macro_rules! print_all {
($($args:expr),*) => { $( println!("{}", $args); )* }
}
fn main() {
print_all!("Rosetta", "Code", "Is", "Awesome!");
} |
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would repr... | #Java | Java | public class VectorProds{
public static class Vector3D<T extends Number>{
private T a, b, c;
public Vector3D(T a, T b, T c){
this.a = a;
this.b = b;
this.c = c;
}
public double dot(Vector3D<?> vec){
return (a.doubleValue() * vec.a.d... |
http://rosettacode.org/wiki/Validate_International_Securities_Identification_Number | Validate International Securities Identification Number | An International Securities Identification Number (ISIN) is a unique international identifier for a financial security such as a stock or bond.
Task
Write a function or program that takes a string as input, and checks whether it is a valid ISIN.
It is only valid if it has the correct format, and the embedded c... | #VBScript | VBScript | ' Validate International Securities Identification Number - 03/03/2019
buf=buf&test("US0378331005")&vbCrLf
buf=buf&test("US0373831005")&vbCrLf
buf=buf&test("U50378331005")&vbCrLf
buf=buf&test("US03378331005")&vbCrLf
buf=buf&test("AU0000XVGZA3")&vbCrLf
buf=buf&test("AU0000VXGZA3")&vbCrLf
buf=buf&test("FR0000988040")&vb... |
http://rosettacode.org/wiki/Validate_International_Securities_Identification_Number | Validate International Securities Identification Number | An International Securities Identification Number (ISIN) is a unique international identifier for a financial security such as a stock or bond.
Task
Write a function or program that takes a string as input, and checks whether it is a valid ISIN.
It is only valid if it has the correct format, and the embedded c... | #Visual_Basic | Visual Basic | Function IsValidISIN(ByVal ISIN As String) As Boolean
Dim s As String, c As String
Dim i As Long
If Len(ISIN) = 12 Then
For i = 1 To Len(ISIN)
c = UCase$(Mid(ISIN, i, 1))
Select Case c
Case "A" To "Z"
If i = 12 Then Exit Function
s = s & CStr(Asc(c) - 55)
Case "0"... |
http://rosettacode.org/wiki/Van_der_Corput_sequence | Van der Corput sequence | When counting integers in binary, if you put a (binary) point to the righEasyLangt of the count then the column immediately to the left denotes a digit with a multiplier of
2
0
{\displaystyle 2^{0}}
; the digit in the next column to the left has a multiplier of
2
1
{\displaystyle 2^{1}}
; and so o... | #Ring | Ring |
decimals(4)
for base = 2 to 5
see "base " + string(base) + " : "
for number = 0 to 9
see "" + corput(number, base) + " "
next
see nl
next
func corput n, b
vdc = 0
denom = 1
while n
denom *= b
rem = n % b
n = floor(n/b)
vdc += rem /... |
http://rosettacode.org/wiki/Van_der_Corput_sequence | Van der Corput sequence | When counting integers in binary, if you put a (binary) point to the righEasyLangt of the count then the column immediately to the left denotes a digit with a multiplier of
2
0
{\displaystyle 2^{0}}
; the digit in the next column to the left has a multiplier of
2
1
{\displaystyle 2^{1}}
; and so o... | #Ruby | Ruby | def vdc(n, base=2)
str = n.to_s(base).reverse
str.to_i(base).quo(base ** str.length)
end
(2..5).each do |base|
puts "Base #{base}: " + Array.new(10){|i| vdc(i,base)}.join(", ")
end |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
Th... | #Mathematica.2FWolfram_Language | Mathematica/Wolfram Language | URLDecoding[url_] :=
StringReplace[url, "%" ~~ x_ ~~ y_ :> FromDigits[x ~~ y, 16]] //.
StringExpression[x___, Longest[n__Integer], y___] :>
StringExpression[x, FromCharacterCode[{n}, "UTF8"], y] |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
Th... | #MATLAB_.2F_Octave | MATLAB / Octave | function u = urldecoding(s)
u = '';
k = 1;
while k<=length(s)
if s(k) == '%' && k+2 <= length(s)
u = sprintf('%s%c', u, char(hex2dec(s((k+1):(k+2)))));
k = k + 3;
else
u = sprintf('%s%c', u, s(k));
k = k + 1;
end
end
end |
http://rosettacode.org/wiki/UPC | UPC | Goal
Convert UPC bar codes to decimal.
Specifically:
The UPC standard is actually a collection of standards -- physical standards, data format standards, product reference standards...
Here, in this task, we will focus on some of the data format standards, with an imaginary physical+electrical implementati... | #Perl | Perl | use strict;
use warnings;
use feature 'say';
sub decode_UPC {
my($line) = @_;
my(%pattern_to_digit_1,%pattern_to_digit_2,@patterns1,@patterns2,@digits,$sum);
for my $p (' ## #', ' ## #', ' # ##', ' #### #', ' # ##', ' ## #', ' # ####', ' ### ##', ' ## ###', ' # ##') {
push @patterns1... |
http://rosettacode.org/wiki/Update_a_configuration_file | Update a configuration file | We have a configuration file as follows:
# This is a configuration file in standard configuration file format
#
# Lines begininning with a hash or a semicolon are ignored by the application
# program. Blank lines are also ignored by the application program.
# The first word on each non comment line is the configurati... | #REXX | REXX | /*REXX program demonstrates how to update a configuration file (four specific tasks).*/
parse arg iFID oFID . /*obtain optional arguments from the CL*/
if iFID=='' | iFID=="," then iFID= 'UPDATECF.TXT' /*Not given? Then use default.*/
if oFID=='' | oFID=="," then oFID='\TEMP\UPDAT... |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #J | J | require 'misc' NB. load system script
prompt 'Enter string: '
0".prompt 'Enter an integer: ' |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Java | Java |
import java.util.Scanner;
public class GetInput {
public static void main(String[] args) throws Exception {
Scanner s = new Scanner(System.in);
System.out.print("Enter a string: ");
String str = s.nextLine();
System.out.print("Enter an integer: ");
int i = Integer.parseIn... |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #Phix | Phix | -- demo\rosetta\User_Input_Graphical.exw
include pGUI.e
Ihandle dlg, label1, input1, label2, input2, OK, Cancel
function ok_cb(Ihandle self)
if self=OK then
string in1 = IupGetAttribute(input1,"VALUE")
integer in2 = IupGetInt(input2,"VALUE")
string msg = sprintf(`"%s" and %d`,{in1,in2})
... |
http://rosettacode.org/wiki/UTF-8_encode_and_decode | UTF-8 encode and decode | As described in UTF-8 and in Wikipedia, UTF-8 is a popular encoding of (multi-byte) Unicode code-points into eight-bit octets.
The goal of this task is to write a encoder that takes a unicode code-point (an integer representing a unicode character) and returns a sequence of 1-4 bytes representing that character in the... | #Raku | Raku | say sprintf("%-18s %-36s|%8s| %7s |%14s | %s\n", 'Character|', 'Name', 'Ordinal', 'Unicode', 'UTF-8 encoded', 'decoded'), '-' x 100;
for < A ö Ж € 𝄞 😜 👨👩👧👦> -> $char {
printf " %-5s | %-43s | %6s | %-7s | %12s |%4s\n", $char, $char.uninames.join(','), $char.ords.join(' '),
('U+' X~ $char.ords».b... |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
Fo... | #Objective-C | Objective-C | NSString *normal = @"http://foo bar/";
NSString *encoded = [normal stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSLog(@"%@", encoded); |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
Fo... | #OCaml | OCaml | $ ocaml
# #use "topfind";;
# #require "netstring";;
# Netencoding.Url.encode "http://foo bar/" ;;
- : string = "http%3A%2F%2Ffoo+bar%2F" |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Lasso | Lasso | // declare thread variable, default type null
var(x)
$x->type // null
// declare local variable, default type null
local(x)
#x->type // null
// declare thread variable, initialize with a type, in this case integer
var(x = integer)
// declare local variable, initialize with a type, in this case integer
local(x = i... |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Liberty_BASIC | Liberty BASIC |
'In Liberty BASIC variables are either string or numeric.
'A variable name can start with any letter and it can contain both letters and numerals, as well as dots (for example: user.firstname).
'There is no practical limit to the length of a variable name... up to ~2M characters.
'The variable names are case sensitiv... |
http://rosettacode.org/wiki/Van_Eck_sequence | Van Eck sequence | The sequence is generated by following this pseudo-code:
A: The first term is zero.
Repeatedly apply:
If the last term is *new* to the sequence so far then:
B: The next term is zero.
Otherwise:
C: The next term is how far back this last term occured previously.
Example
Using ... | #Swift | Swift | struct VanEckSequence: Sequence, IteratorProtocol {
private var index = 0
private var lastTerm = 0
private var lastPos = Dictionary<Int, Int>()
mutating func next() -> Int? {
let result = lastTerm
var nextTerm = 0
if let v = lastPos[lastTerm] {
nextTerm = index - v
... |
http://rosettacode.org/wiki/Van_Eck_sequence | Van Eck sequence | The sequence is generated by following this pseudo-code:
A: The first term is zero.
Repeatedly apply:
If the last term is *new* to the sequence so far then:
B: The next term is zero.
Otherwise:
C: The next term is how far back this last term occured previously.
Example
Using ... | #Tcl | Tcl | ## Mathematically, the first term has index "0", not "1". We do that, also.
set ::vE 0
proc vanEck {n} {
global vE vEocc
while {$n >= [set k [expr {[llength $vE] - 1}]]} {
set kv [lindex $vE $k]
## value $kv @ $k is not yet stuffed into vEocc()
lappend vE [expr {[info exists vEocc($... |
http://rosettacode.org/wiki/Variadic_function | Variadic function | Task
Create a function which takes in a variable number of arguments and prints each one on its own line.
Also show, if possible in your language, how to call the function on a list of arguments constructed at runtime.
Functions of this type are also known as Variadic Functions.
Related task
Call a function... | #Scala | Scala | def printAll(args: Any*) = args foreach println |
http://rosettacode.org/wiki/Variadic_function | Variadic function | Task
Create a function which takes in a variable number of arguments and prints each one on its own line.
Also show, if possible in your language, how to call the function on a list of arguments constructed at runtime.
Functions of this type are also known as Variadic Functions.
Related task
Call a function... | #Scheme | Scheme | (define (print-all . things)
(for-each
(lambda (x) (display x) (newline))
things)) |
http://rosettacode.org/wiki/Variadic_function | Variadic function | Task
Create a function which takes in a variable number of arguments and prints each one on its own line.
Also show, if possible in your language, how to call the function on a list of arguments constructed at runtime.
Functions of this type are also known as Variadic Functions.
Related task
Call a function... | #Sidef | Sidef | func print_all(*things) {
things.each { |x| say x };
} |
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would repr... | #JavaScript | JavaScript | function dotProduct() {
var len = arguments[0] && arguments[0].length;
var argsLen = arguments.length;
var i, j = len;
var prod, sum = 0;
// If no arguments supplied, return undefined
if (!len) {
return;
}
// If all vectors not same length, return undefined
i = argsLen;
while (i--) {
i... |
http://rosettacode.org/wiki/Validate_International_Securities_Identification_Number | Validate International Securities Identification Number | An International Securities Identification Number (ISIN) is a unique international identifier for a financial security such as a stock or bond.
Task
Write a function or program that takes a string as input, and checks whether it is a valid ISIN.
It is only valid if it has the correct format, and the embedded c... | #Visual_Basic_.NET | Visual Basic .NET | Option Strict On
Imports System.Text.RegularExpressions
Module Module1
ReadOnly IsinRegex As New Regex("^[A-Z]{2}[A-Z0-9]{9}\d$", RegexOptions.Compiled)
Function DigitValue(c As Char) As Integer
Dim temp As Integer
If Asc(c) >= Asc("0"c) AndAlso Asc(c) <= Asc("9"c) Then
temp = As... |
http://rosettacode.org/wiki/Van_der_Corput_sequence | Van der Corput sequence | When counting integers in binary, if you put a (binary) point to the righEasyLangt of the count then the column immediately to the left denotes a digit with a multiplier of
2
0
{\displaystyle 2^{0}}
; the digit in the next column to the left has a multiplier of
2
1
{\displaystyle 2^{1}}
; and so o... | #Rust | Rust |
/// Van der Corput sequence for any base, based on C languange example from Wikipedia.
pub fn corput(nth: usize, base: usize) -> f64 {
let mut n = nth;
let mut q: f64 = 0.0;
let mut bk: f64 = 1.0 / (base as f64);
while n > 0_usize {
q += ((n % base) as f64)*bk;
n /= base;
bk /= bas... |
http://rosettacode.org/wiki/Van_der_Corput_sequence | Van der Corput sequence | When counting integers in binary, if you put a (binary) point to the righEasyLangt of the count then the column immediately to the left denotes a digit with a multiplier of
2
0
{\displaystyle 2^{0}}
; the digit in the next column to the left has a multiplier of
2
1
{\displaystyle 2^{1}}
; and so o... | #Scala | Scala | object VanDerCorput extends App {
def compute(n: Int, base: Int = 2) =
Iterator.from(0).
scanLeft(1)((a, _) => a * base).
map(b => (n - 1) / b -> b).
takeWhile(_._1 != 0).
foldLeft(0d)((a, b) => a + (b._1 % base).toDouble / b._2 / base)
val n = scala.io.... |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
Th... | #NetRexx | NetRexx | /* NetRexx */
options replace format comments java crossref savelog symbols nobinary
url = [ -
'http%3A%2F%2Ffoo%20bar%2F', -
'mailto%3A%22Ivan%20Aim%22%20%3Civan%2Eaim%40email%2Ecom%3E', -
'%6D%61%69%6C%74%6F%3A%22%49%72%6D%61%20%55%73%65%72%22%20%3C%69%72%6D%61%2E%75%73%65%72%40%6D%61%69%6C%2E%63%6F%6D%3E' -
... |
http://rosettacode.org/wiki/UPC | UPC | Goal
Convert UPC bar codes to decimal.
Specifically:
The UPC standard is actually a collection of standards -- physical standards, data format standards, product reference standards...
Here, in this task, we will focus on some of the data format standards, with an imaginary physical+electrical implementati... | #Phix | Phix | with javascript_semantics
constant numbers = {" ## #", -- 0
" ## #", -- 1
" # ##", -- 2
" #### #", -- 3
" # ##", -- 4
" ## #", -- 5
" # ####", -- 6
" ### ##", -- 7
... |
http://rosettacode.org/wiki/Update_a_configuration_file | Update a configuration file | We have a configuration file as follows:
# This is a configuration file in standard configuration file format
#
# Lines begininning with a hash or a semicolon are ignored by the application
# program. Blank lines are also ignored by the application program.
# The first word on each non comment line is the configurati... | #Ruby | Ruby | require 'stringio'
class ConfigFile
# create a ConfigFile object from a file
def self.file(filename)
fh = File.open(filename)
obj = self.new(fh)
obj.filename = filename
fh.close
obj
end
# create a ConfigFile object from a string
def self.data(string)
fh = StringIO.new(string)
... |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #JavaScript | JavaScript | WScript.Echo("Enter a string");
var str = WScript.StdIn.ReadLine();
var val = 0;
while (val != 75000) {
WScript.Echo("Enter the integer 75000");
val = parseInt( WScript.StdIn.ReadLine() );
} |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Joy | Joy |
"Enter a string: " putchars
stdin fgets
"Enter a number: " putchars
stdin fgets 10 strtol.
|
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #PicoLisp | PicoLisp | (and
(call 'sh "-c"
(pack
"dialog \
--inputbox 'Input a string' 8 60 \
--inputbox 'Input a number' 8 20 \
2>"
(tmp "dlg") ) )
(split (in (tmp "dlg") (line)) "^I")
(cons (pack (car @)) (format (cadr @))) ) |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #PowerBASIC | PowerBASIC | FUNCTION PBMAIN () AS LONG
result$ = INPUTBOX$("Enter a string.")
MSGBOX result$
DO
'This assumes that 75000 is the ONLY valid input.
result$ = INPUTBOX$("Enter the number 75000.")
IF VAL(result$) <> 75000 THEN
MSGBOX "You need to enter 75000!"
ELSE
MS... |
http://rosettacode.org/wiki/UTF-8_encode_and_decode | UTF-8 encode and decode | As described in UTF-8 and in Wikipedia, UTF-8 is a popular encoding of (multi-byte) Unicode code-points into eight-bit octets.
The goal of this task is to write a encoder that takes a unicode code-point (an integer representing a unicode character) and returns a sequence of 1-4 bytes representing that character in the... | #Ruby | Ruby |
character_arr = ["A","ö","Ж","€","𝄞"]
for c in character_arr do
puts "Character: " + c.encode("utf-8")
puts "Code-Point: #{c.encode("utf-8").ord.to_s(16).upcase}"
puts "Code-Units: " + c.each_byte.map { |n| '%02X ' % (n & 0xFF) }.join
puts ""
end
|
http://rosettacode.org/wiki/UTF-8_encode_and_decode | UTF-8 encode and decode | As described in UTF-8 and in Wikipedia, UTF-8 is a popular encoding of (multi-byte) Unicode code-points into eight-bit octets.
The goal of this task is to write a encoder that takes a unicode code-point (an integer representing a unicode character) and returns a sequence of 1-4 bytes representing that character in the... | #Rust | Rust | fn main() {
let chars = vec!('A', 'ö', 'Ж', '€', '𝄞');
chars.iter().for_each(|c| {
let mut encoded = vec![0; c.len_utf8()];
c.encode_utf8(&mut encoded);
let decoded = String::from_utf8(encoded.to_vec()).unwrap();
let encoded_string = encoded.iter().fold(String::new(), |acc, val|... |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
Fo... | #ooRexx | ooRexx | sub urlencode {
my $s = shift;
$s =~ s/([^-A-Za-z0-9_.!~*'() ])/sprintf("%%%02X", ord($1))/eg;
$s =~ tr/ /+/;
return $s;
}
print urlencode('http://foo bar/')."\n";
|
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
Fo... | #Perl | Perl | sub urlencode {
my $s = shift;
$s =~ s/([^-A-Za-z0-9_.!~*'() ])/sprintf("%%%02X", ord($1))/eg;
$s =~ tr/ /+/;
return $s;
}
print urlencode('http://foo bar/')."\n";
|
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Lingo | Lingo | x = 23
y = "Hello world!"
z = TRUE -- same effect as z = 1 |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Logo | Logo | make "g1 0
name 2 "g2 ; same as make with parameters reversed
global "g3 ; no initial value
to func :x
make "g4 4 ; still global
localmake "L1 6
local ["L2 "L3] ; local variables, collection syntax
func2 :g4
print :L2 ; 9, modified by func2
print :L3 ; L3 has no value, was not modifie... |
http://rosettacode.org/wiki/Van_Eck_sequence | Van Eck sequence | The sequence is generated by following this pseudo-code:
A: The first term is zero.
Repeatedly apply:
If the last term is *new* to the sequence so far then:
B: The next term is zero.
Otherwise:
C: The next term is how far back this last term occured previously.
Example
Using ... | #Visual_Basic_.NET | Visual Basic .NET | Imports System.Linq
Module Module1
Dim h() As Integer
Sub sho(i As Integer)
Console.WriteLine(String.Join(" ", h.Skip(i).Take(10)))
End Sub
Sub Main()
Dim a, b, c, d, f, g As Integer : g = 1000
h = new Integer(g){} : a = 0 : b = 1 : For c = 2 To g
f = h(b) : For d = a... |
http://rosettacode.org/wiki/Van_Eck_sequence | Van Eck sequence | The sequence is generated by following this pseudo-code:
A: The first term is zero.
Repeatedly apply:
If the last term is *new* to the sequence so far then:
B: The next term is zero.
Otherwise:
C: The next term is how far back this last term occured previously.
Example
Using ... | #Vlang | Vlang | fn main() {
max := 1000
mut a := []int{len: max} // all zero by default
for n in 0..max-1 {
for m := n - 1; m >= 0; m-- {
if a[m] == a[n] {
a[n+1] = n - m
break
}
}
}
println("The first ten terms of the Van Eck sequence are... |
http://rosettacode.org/wiki/Variadic_function | Variadic function | Task
Create a function which takes in a variable number of arguments and prints each one on its own line.
Also show, if possible in your language, how to call the function on a list of arguments constructed at runtime.
Functions of this type are also known as Variadic Functions.
Related task
Call a function... | #Slate | Slate | define: #printAll -> [| *rest | rest do: [| :arg | inform: arg printString]].
printAll applyTo: #(4 3 5 6 4 3).
printAll applyTo: #('Rosetta' 'Code' 'Is' 'Awesome!'). |
http://rosettacode.org/wiki/Variadic_function | Variadic function | Task
Create a function which takes in a variable number of arguments and prints each one on its own line.
Also show, if possible in your language, how to call the function on a list of arguments constructed at runtime.
Functions of this type are also known as Variadic Functions.
Related task
Call a function... | #Swift | Swift | func printAll<T>(things: T...) {
// "things" is a [T]
for i in things {
print(i)
}
} |
http://rosettacode.org/wiki/Variadic_function | Variadic function | Task
Create a function which takes in a variable number of arguments and prints each one on its own line.
Also show, if possible in your language, how to call the function on a list of arguments constructed at runtime.
Functions of this type are also known as Variadic Functions.
Related task
Call a function... | #Tcl | Tcl | proc print_all {args} {puts [join $args \n]}
print_all 4 3 5 6 4 3
print_all 4 3 5
print_all Rosetta Code Is Awesome!
set things {Rosetta Code Is Awesome!}
print_all $things ;# ==> incorrect: passes a single argument (a list) to print_all
print_all {*}$things ;# ==> correct: passes each element of the list to the... |
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would repr... | #jq | jq | def dot_product(a; b):
reduce range(0;a|length) as $i (0; . + (a[$i] * b[$i]) );
# for 3d vectors
def cross_product(a;b):
[ a[1]*b[2] - a[2]*b[1], a[2]*b[0] - a[0]*b[2], a[0]*b[1]-a[1]*b[0] ];
def scalar_triple_product(a;b;c):
dot_product(a; cross_product(b; c));
def vector_triple_product(a;b;c):
cross_pr... |
http://rosettacode.org/wiki/Validate_International_Securities_Identification_Number | Validate International Securities Identification Number | An International Securities Identification Number (ISIN) is a unique international identifier for a financial security such as a stock or bond.
Task
Write a function or program that takes a string as input, and checks whether it is a valid ISIN.
It is only valid if it has the correct format, and the embedded c... | #Vlang | Vlang | import regex
const (
inc = [
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
[0, 2, 4, 6, 8, 1, 3, 5, 7, 9],
]
)
fn valid_isin(n string) bool {
mut r,_,_ := regex.regex_base('^[A-Z]{2}[A-Z0-9]{9}\d$')
if !r.matches_string(n) {
return false
}
mut sum := 0
mut p := 0
for i := 1... |
http://rosettacode.org/wiki/Validate_International_Securities_Identification_Number | Validate International Securities Identification Number | An International Securities Identification Number (ISIN) is a unique international identifier for a financial security such as a stock or bond.
Task
Write a function or program that takes a string as input, and checks whether it is a valid ISIN.
It is only valid if it has the correct format, and the embedded c... | #Wren | Wren | import "/str" for Char
import "/trait" for Stepped
import "/fmt" for Conv, Fmt
var luhn = Fn.new { |s|
s = s[-1..0]
var s1 = Stepped.new(s, 2).reduce(0) { |sum, d| sum + d.bytes[0] - 48 }
var s2 = Stepped.new(s[1..-1], 2).reduce(0) { |sum, d|
var d2 = (d.bytes[0] - 48) * 2
return sum + ((... |
http://rosettacode.org/wiki/Van_der_Corput_sequence | Van der Corput sequence | When counting integers in binary, if you put a (binary) point to the righEasyLangt of the count then the column immediately to the left denotes a digit with a multiplier of
2
0
{\displaystyle 2^{0}}
; the digit in the next column to the left has a multiplier of
2
1
{\displaystyle 2^{1}}
; and so o... | #Seed7 | Seed7 | $ include "seed7_05.s7i";
include "float.s7i";
const func float: vdc (in var integer: number, in integer: base) is func
result
var float: vdc is 0.0;
local
var integer: denom is 1;
var integer: remainder is 0;
begin
while number <> 0 do
denom *:= base;
remainder := number rem base;... |
http://rosettacode.org/wiki/Van_der_Corput_sequence | Van der Corput sequence | When counting integers in binary, if you put a (binary) point to the righEasyLangt of the count then the column immediately to the left denotes a digit with a multiplier of
2
0
{\displaystyle 2^{0}}
; the digit in the next column to the left has a multiplier of
2
1
{\displaystyle 2^{1}}
; and so o... | #Sidef | Sidef | func vdc(value, base=2) {
while (value[-1] > 0) {
value.append(value[-1] / base -> int)
}
var (x, sum) = (1, 0)
value.each { |i|
sum += ((i % base) / (x *= base))
}
return sum
}
for base in (2..5) {
var seq = 10.of {|i| vdc([i], base) }
"base %d: %s\n".printf(base, seq.... |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
Th... | #NewLISP | NewLISP | ;; universal decoder, works for ASCII and UTF-8
;; (source http://www.newlisp.org/index.cgi?page=Code_Snippets)
(define (url-decode url (opt nil))
(if opt (replace "+" url " "))
(replace "%([0-9a-f][0-9a-f])" url (pack "b" (int $1 0 16)) 1))
(url-decode "http%3A%2F%2Ffoo%20bar%2F") |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
Th... | #Nim | Nim | import cgi
echo decodeUrl("http%3A%2F%2Ffoo%20bar%2F") |
http://rosettacode.org/wiki/UPC | UPC | Goal
Convert UPC bar codes to decimal.
Specifically:
The UPC standard is actually a collection of standards -- physical standards, data format standards, product reference standards...
Here, in this task, we will focus on some of the data format standards, with an imaginary physical+electrical implementati... | #PicoLisp | PicoLisp | (de l2n (Lst)
(case Lst
((0 0 0 1 1 0 1) 0)
((0 0 1 1 0 0 1) 1)
((0 0 1 0 0 1 1) 2)
((0 1 1 1 1 0 1) 3)
((0 1 0 0 0 1 1) 4)
((0 1 1 0 0 0 1) 5)
((0 1 0 1 1 1 1) 6)
((0 1 1 1 0 1 1) 7)
((0 1 1 0 1 1 1) 8)
((0 0 0 1 0 1 1) 9) ) )
(de convs (Lst Flg)
(make
... |
http://rosettacode.org/wiki/Update_a_configuration_file | Update a configuration file | We have a configuration file as follows:
# This is a configuration file in standard configuration file format
#
# Lines begininning with a hash or a semicolon are ignored by the application
# program. Blank lines are also ignored by the application program.
# The first word on each non comment line is the configurati... | #Tcl | Tcl | package require Tcl 8.6
oo::class create Config {
variable filename contents
constructor fileName {
set filename $fileName
set contents {}
try {
set f [open $filename]
### Sanitize during input
foreach line [split [read $f] \n] {
if {[string match "#*" $line]} {
lappend contents $line
... |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #jq | jq | def read(int):
null | until( . == int; "Expecting \(int)" | stderr | input);
def read_string:
null | until( type == "string"; "Please enter a string" | stderr | input);
(read_string | "I see the string: \(.)"),
(read(75000) | "I see the expected integer: \(.)") |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Julia | Julia |
print("String? ")
y = readline()
println("Your input was \"", y, "\".\n")
print("Integer? ")
y = readline()
try
y = parse(Int, y)
println("Your input was \"", y, "\".\n")
catch
println("Sorry, but \"", y, "\" does not compute as an integer.")
end
|
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #PowerShell | PowerShell | #region Define the Windows Form
[Void][Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
$Form1 = New-Object System.Windows.Forms.Form
$label1 = New-Object System.Windows.Forms.Label
$label2 = New-Object System.Windows.Forms.Label
$txtInputText = New-Object System.Windows.Forms.TextBox
$txtInputNumber... |
http://rosettacode.org/wiki/UTF-8_encode_and_decode | UTF-8 encode and decode | As described in UTF-8 and in Wikipedia, UTF-8 is a popular encoding of (multi-byte) Unicode code-points into eight-bit octets.
The goal of this task is to write a encoder that takes a unicode code-point (an integer representing a unicode character) and returns a sequence of 1-4 bytes representing that character in the... | #Scala | Scala | object UTF8EncodeAndDecode extends App {
val codePoints = Seq(0x0041, 0x00F6, 0x0416, 0x20AC, 0x1D11E)
def utf8Encode(codepoint: Int): Array[Byte] =
new String(Array[Int](codepoint), 0, 1).getBytes(StandardCharsets.UTF_8)
def utf8Decode(bytes: Array[Byte]): Int =
new String(bytes, StandardCharsets.U... |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
Fo... | #Phix | Phix | --
-- demo\rosetta\encode_url.exw
-- ===========================
--
with javascript_semantics
function nib(integer b)
return b+iff(b<=9?'0':'A'-10)
end function
function encode_url(string s, string exclusions="", integer spaceplus=0)
string res = ""
for i=1 to length(s) do
integer ch = s[i]
if ... |
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #LotusScript | LotusScript | Sub Click()
'a few declarations as example
Dim s as New NotesSession ' declaring a New NotesSession actually returns the current, active NotesSession
Dim i as Integer ' i = 0
Dim s as String ' s= ""
Dim v as Variant ' v is nothing
Dim l as Long ' l = 0
Dim doc as NotesDocument 'doc is EMTPY
'...
End Sub
|
http://rosettacode.org/wiki/Variables | Variables | Task
Demonstrate a language's methods of:
variable declaration
initialization
assignment
datatypes
scope
referencing, and
other variable related facilities
| #Lua | Lua | a = 1 -- Here we declare a numeric variable
fruit = "banana" -- Here we declare a string datatype
needspeeling = True -- This is a boolean
local b = 2 -- This variable declaration is prefixed with a scope modifier |
http://rosettacode.org/wiki/Van_Eck_sequence | Van Eck sequence | The sequence is generated by following this pseudo-code:
A: The first term is zero.
Repeatedly apply:
If the last term is *new* to the sequence so far then:
B: The next term is zero.
Otherwise:
C: The next term is how far back this last term occured previously.
Example
Using ... | #Wren | Wren | var max = 1000
var a = List.filled(max, 0)
var seen = {}
for (n in 0...max-1) {
var m = seen[a[n]]
if (m != null) a[n+1] = n - m
seen[a[n]] = n
}
System.print("The first ten terms of the Van Eck sequence are:")
System.print(a[0...10])
System.print("\nTerms 991 to 1000 of the sequence are:")
System.print(a[9... |
http://rosettacode.org/wiki/Van_Eck_sequence | Van Eck sequence | The sequence is generated by following this pseudo-code:
A: The first term is zero.
Repeatedly apply:
If the last term is *new* to the sequence so far then:
B: The next term is zero.
Otherwise:
C: The next term is how far back this last term occured previously.
Example
Using ... | #XPL0 | XPL0 | int Seq(1001), Back, N, M, Term;
func New; \Return 'true' if last term is new to sequence
[for Back:= N-2 downto 1 do
if Seq(Back) = Seq(N-1) then return false;
return true;
];
func VanEck; \Return term of Van Eck sequence
[Seq(N):= if New then 0 else N-Back-1;
N:= N+1;
return Seq(N-1);
];
[N:= 1... |
http://rosettacode.org/wiki/Variadic_function | Variadic function | Task
Create a function which takes in a variable number of arguments and prints each one on its own line.
Also show, if possible in your language, how to call the function on a list of arguments constructed at runtime.
Functions of this type are also known as Variadic Functions.
Related task
Call a function... | #TIScript | TIScript |
function printAll(separator,argv..) {
if(argv.length)
stdout.print(argv[0]);
for (var i=1; i < argv.length; i++)
stdout.print(separator, argv[i]);
}
printAll(" ", 4, 3, 5, 6, 4, 3);
printAll(",", 4, 3, 5);
printAll("! ","Rosetta", "Code", "Is", "Awesome"); |
http://rosettacode.org/wiki/Variadic_function | Variadic function | Task
Create a function which takes in a variable number of arguments and prints each one on its own line.
Also show, if possible in your language, how to call the function on a list of arguments constructed at runtime.
Functions of this type are also known as Variadic Functions.
Related task
Call a function... | #uBasic.2F4tH | uBasic/4tH | Push _Mary, _had, _a, _little, _lamb ' Push the hashes
Proc _PrintStrings (5) ' Print the string
Push 1, 4, 5, 19, 12, 3 ' Push the numbers
Print "Maximum is: ";FUNC(_Max(6)) ' Call the function
End
_PrintStrings Param(1) ' Print a variadic number of strings
... |
http://rosettacode.org/wiki/Vector_products | Vector products | A vector is defined as having three dimensions as being represented by an ordered collection of three numbers: (X, Y, Z).
If you imagine a graph with the x and y axis being at right angles to each other and having a third, z axis coming out of the page, then a triplet of numbers, (X, Y, Z) would repr... | #Julia | Julia | using LinearAlgebra
const a = [3, 4, 5]
const b = [4, 3, 5]
const c = [-5, -12, -13]
println("Test Vectors:")
@show a b c
println("\nVector Products:")
@show a ⋅ b
@show a × b
@show a ⋅ (b × c)
@show a × (b × c) |
http://rosettacode.org/wiki/Validate_International_Securities_Identification_Number | Validate International Securities Identification Number | An International Securities Identification Number (ISIN) is a unique international identifier for a financial security such as a stock or bond.
Task
Write a function or program that takes a string as input, and checks whether it is a valid ISIN.
It is only valid if it has the correct format, and the embedded c... | #XPL0 | XPL0 | string 0; \use zero-terminated strings
func Luhn(Str); \Return 'true' if digits in Str pass Luhn test
char Str;
int Len, Sum, I, Dig;
[Len:= 0; \find length of Str
while Str(Len) do Len:= Len+1;
Sum:= 0; \sum even and odd digits
for I:= 0 to Len-1 do \(no ne... |
http://rosettacode.org/wiki/Validate_International_Securities_Identification_Number | Validate International Securities Identification Number | An International Securities Identification Number (ISIN) is a unique international identifier for a financial security such as a stock or bond.
Task
Write a function or program that takes a string as input, and checks whether it is a valid ISIN.
It is only valid if it has the correct format, and the embedded c... | #Yabasic | Yabasic | sub luhntest(cardnr$)
local i, j, s1, s2, l
cardnr$ = Trim$(cardnr$) // remove spaces
l = Len(cardnr$)
// sum odd numbers
For i = l To 1 Step -2
s1 = s1 + (asc(mid$(cardnr$, i, 1)) - Asc("0"))
Next
// sum even numbers
For i = l-1 To 1 Step -2
j = asc(mid$(cardnr$, i... |
http://rosettacode.org/wiki/Van_der_Corput_sequence | Van der Corput sequence | When counting integers in binary, if you put a (binary) point to the righEasyLangt of the count then the column immediately to the left denotes a digit with a multiplier of
2
0
{\displaystyle 2^{0}}
; the digit in the next column to the left has a multiplier of
2
1
{\displaystyle 2^{1}}
; and so o... | #Stata | Stata | mata
// 5th term of Van der Corput sequence
halton(1,1,5)
.625
// the first 10 terms of Van der Corput sequence
halton(10,1)
1
+---------+
1 | .5 |
2 | .25 |
3 | .75 |
4 | .125 |
5 | .625 |
6 | .375 |
7 | .875 |
8 | .0625 |
9 | .5625 |
10 | ... |
http://rosettacode.org/wiki/Van_der_Corput_sequence | Van der Corput sequence | When counting integers in binary, if you put a (binary) point to the righEasyLangt of the count then the column immediately to the left denotes a digit with a multiplier of
2
0
{\displaystyle 2^{0}}
; the digit in the next column to the left has a multiplier of
2
1
{\displaystyle 2^{1}}
; and so o... | #Swift | Swift | func vanDerCorput(n: Int, base: Int, num: inout Int, denom: inout Int) {
var n = n, p = 0, q = 1
while n != 0 {
p = p * base + (n % base)
q *= base
n /= base
}
num = p
denom = q
while p != 0 {
n = p
p = q % p
q = n
}
num /= q
denom /= q
}
var num = 0
var denom = 0
f... |
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
Th... | #Oberon-2 | Oberon-2 |
MODULE URLDecoding;
IMPORT
URI := URI:String,
Out := NPCT:Console;
BEGIN
Out.String(URI.Unescape("http%3A%2F%2Ffoo%20bar%2F"));Out.Ln;
Out.String(URI.Unescape("google.com/search?q=%60Abdu%27l-Bah%C3%A1"));Out.Ln;
END URLDecoding.
|
http://rosettacode.org/wiki/URL_decoding | URL decoding | This task (the reverse of URL encoding and distinct from URL parser) is to provide a function
or mechanism to convert an URL-encoded string into its original unencoded form.
Test cases
The encoded string "http%3A%2F%2Ffoo%20bar%2F" should be reverted to the unencoded form "http://foo bar/".
Th... | #Objeck | Objeck |
class UrlDecode {
function : Main(args : String[]) ~ Nil {
Net.UrlUtility->Decode("http%3A%2F%2Ffoo%20bar%2F")->PrintLine();
}
}
|
http://rosettacode.org/wiki/UPC | UPC | Goal
Convert UPC bar codes to decimal.
Specifically:
The UPC standard is actually a collection of standards -- physical standards, data format standards, product reference standards...
Here, in this task, we will focus on some of the data format standards, with an imaginary physical+electrical implementati... | #Python | Python | """UPC-A barcode reader. Requires Python =>3.6"""
import itertools
import re
RE_BARCODE = re.compile(
r"^(?P<s_quiet> +)" # quiet zone
r"(?P<s_guard># #)" # start guard
r"(?P<left>[ #]{42})" # left digits
r"(?P<m_guard> # # )" # middle guard
r"(?P<right>[ #]{42})" # right digits
r"(?P<e_g... |
http://rosettacode.org/wiki/Update_a_configuration_file | Update a configuration file | We have a configuration file as follows:
# This is a configuration file in standard configuration file format
#
# Lines begininning with a hash or a semicolon are ignored by the application
# program. Blank lines are also ignored by the application program.
# The first word on each non comment line is the configurati... | #TXR | TXR | VAR # define or update VAR as a true-valued boolean
VAR= # ensure "; VAR" in the config file.
VAR=VAL # ensure "VAR VAL" in the config file |
http://rosettacode.org/wiki/Update_a_configuration_file | Update a configuration file | We have a configuration file as follows:
# This is a configuration file in standard configuration file format
#
# Lines begininning with a hash or a semicolon are ignored by the application
# program. Blank lines are also ignored by the application program.
# The first word on each non comment line is the configurati... | #VBScript | VBScript |
Set objFSO = CreateObject("Scripting.FileSystemObject")
'Paramater lookups
Set objParamLookup = CreateObject("Scripting.Dictionary")
With objParamLookup
.Add "FAVOURITEFRUIT", "banana"
.Add "NEEDSPEELING", ""
.Add "SEEDSREMOVED", ""
.Add "NUMBEROFBANANAS", "1024"
.Add "NUMBEROFSTRAWBERRIES", "62000"
End With
... |
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Kite | Kite |
System.file.stdout|write("Enter a String ");
string = System.file.stdin|readline();
|
http://rosettacode.org/wiki/User_input/Text | User input/Text | User input/Text is part of Short Circuit's Console Program Basics selection.
Task
Input a string and the integer 75000 from the text console.
See also: User input/Graphical
| #Kotlin | Kotlin | // version 1.1
fun main(args: Array<String>) {
print("Enter a string : ")
val s = readLine()!!
println(s)
do {
print("Enter 75000 : ")
val number = readLine()!!.toInt()
} while (number != 75000)
} |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #Processing | Processing | import javax.swing.JOptionPane;
int number = int(JOptionPane.showInputDialog ("Enter an Integer"));
println(number);
String string = JOptionPane.showInputDialog ("Enter a String");
println(string); |
http://rosettacode.org/wiki/User_input/Graphical | User input/Graphical |
In this task, the goal is to input a string and the integer 75000, from graphical user interface.
See also: User input/Text
| #PureBasic | PureBasic | string$=InputRequester("Some Title","Enter a string","")
variable=Val(InputRequester("Some other Title","Enter a Number","75000")) |
http://rosettacode.org/wiki/UTF-8_encode_and_decode | UTF-8 encode and decode | As described in UTF-8 and in Wikipedia, UTF-8 is a popular encoding of (multi-byte) Unicode code-points into eight-bit octets.
The goal of this task is to write a encoder that takes a unicode code-point (an integer representing a unicode character) and returns a sequence of 1-4 bytes representing that character in the... | #Seed7 | Seed7 | $ include "seed7_05.s7i";
include "unicode.s7i";
include "console.s7i";
include "bytedata.s7i";
const proc: main is func
local
var char: ch is ' ';
var string: utf8 is "";
begin
OUT := STD_CONSOLE;
writeln("Character Unicode UTF-8 encoding (hex) Decoded");
writeln("-------------------... |
http://rosettacode.org/wiki/UTF-8_encode_and_decode | UTF-8 encode and decode | As described in UTF-8 and in Wikipedia, UTF-8 is a popular encoding of (multi-byte) Unicode code-points into eight-bit octets.
The goal of this task is to write a encoder that takes a unicode code-point (an integer representing a unicode character) and returns a sequence of 1-4 bytes representing that character in the... | #Sidef | Sidef | func utf8_encoder(Number code) {
code.chr.encode('UTF-8').bytes.map{.chr}
}
func utf8_decoder(Array bytes) {
bytes.map{.ord}.decode('UTF-8')
}
for n in ([0x0041, 0x00F6, 0x0416, 0x20AC, 0x1D11E]) {
var encoded = utf8_encoder(n)
var decoded = utf8_decoder(encoded)
assert_eq(n, decoded.ord)
sa... |
http://rosettacode.org/wiki/URL_encoding | URL encoding | Task
Provide a function or mechanism to convert a provided string into URL encoding representation.
In URL encoding, special characters, control characters and extended characters
are converted into a percent symbol followed by a two digit hexadecimal code,
So a space character encodes into %20 within the string.
Fo... | #PHP | PHP | <?php
$s = 'http://foo/bar/';
$s = rawurlencode($s);
?> |
Subsets and Splits
Rosetta Code COBOL Python Hard Tasks
Identifies and retrieves challenging tasks that exist in both COBOL and Python, revealing cross-language programming patterns and difficulty levels for comparative analysis.
Rosetta Code Task Comparisons
Identifies tasks common to both COBOL and Python languages that are described as having difficulty levels, revealing cross-language task similarities and providing useful comparative programming examples.
Select Specific Languages Codes
Retrieves specific programming language names and codes from training data, providing basic filtering but limited analytical value beyond identifying these particular languages.