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How to Apply K-means Clustering to Time Series Data \| by Alexandra Amidon \| Towards Data Science	Clustering is an unsupervised learning task where an algorithm groups similar data points without any “ground truth” labels. Similarity between data points is measured with a distance metric, commonly Euclidean distance. Clustering different time series into similar groups is a challenging clustering task because each ...	[ { "code": null, "e": 393, "s": 172, "text": "Clustering is an unsupervised learning task where an algorithm groups similar data points without any “ground truth” labels. Similarity between data points is measured with a distance metric, commonly Euclidean distance." }, { "code": null, "e...
Closest perfect square and its distance	30 Jun, 2022 Given a positive integer . The task is to find the perfect square number closest to N and steps required to reach this number from N.Note: The closest perfect square to N can be either less than, equal to or greater than N and steps are referred to as the difference between N and the closest perfect square...	[ { "code": null, "e": 54, "s": 26, "text": "\n30 Jun, 2022" }, { "code": null, "e": 374, "s": 54, "text": "Given a positive integer . The task is to find the perfect square number closest to N and steps required to reach this number from N.Note: The closest perfect square to N can...
Hierarchical Clustering in R Programming	03 Dec, 2021 Hierarchical clustering in R Programming Language is an Unsupervised non-linear algorithm in which clusters are created such that they have a hierarchy(or a pre-determined ordering). For example, consider a family of up to three generations. A grandfather and mother have their children that become father a...	[ { "code": null, "e": 28, "s": 0, "text": "\n03 Dec, 2021" }, { "code": null, "e": 444, "s": 28, "text": "Hierarchical clustering in R Programming Language is an Unsupervised non-linear algorithm in which clusters are created such that they have a hierarchy(or a pre-determined ord...
unordered_set size() function in C++ STL	28 Jun, 2022 The unordered_set::size() method is a builtin function in C++ STL which is used to return the number of elements in the unordered_set container. Syntax: unordered_set_name.size() Parameter: It does not accepts any parameter. Return Value: The function returns the number of elements in the container. Below ...	[ { "code": null, "e": 53, "s": 25, "text": "\n28 Jun, 2022" }, { "code": null, "e": 206, "s": 53, "text": "The unordered_set::size() method is a builtin function in C++ STL which is used to return the number of elements in the unordered_set container. Syntax:" }, { "code":...
Custom Snackbars in Android	23 Feb, 2021 SnackBars plays a very important role in the user experience. The snack bar which may or may not contain the action button to do shows the message which had happened due to the user interaction immediately. So in this article, it’s been discussed how the SnackBars can be implemented using custom layouts. H...	[ { "code": null, "e": 54, "s": 26, "text": "\n23 Feb, 2021" }, { "code": null, "e": 580, "s": 54, "text": "SnackBars plays a very important role in the user experience. The snack bar which may or may not contain the action button to do shows the message which had happened due to t...
patch - Unix, Linux Command	but usually just patch -pnum <patchfile Upon startup, patch attempts to determine the type of the diff listing, unless overruled by a -c (--context), -e (--ed), -n (--normal), or -u (--unified) option. Context diffs (old-style, new-style, and unified) and normal diffs are applied by the patch program itself, while...	[ { "code": null, "e": 10731, "s": 10711, "text": "\n\nbut usually just\n" }, { "code": null, "e": 10757, "s": 10731, "text": "\n\npatch -pnum <patchfile " }, { "code": null, "e": 11091, "s": 10757, "text": "\nUpon startup, patch attempts to determine the type o...
SQL – SELECT NULL	17 Jun, 2021 The word NULL is used to describe a missing value in SQL. In a table, a NULL value is a value in a field that appears to be empty. A field with a NULL value is the same as one that has no value. It’s important to grasp the difference between a NULL value and a zero value or a field of spaces. There are two...	[ { "code": null, "e": 28, "s": 0, "text": "\n17 Jun, 2021" }, { "code": null, "e": 322, "s": 28, "text": "The word NULL is used to describe a missing value in SQL. In a table, a NULL value is a value in a field that appears to be empty. A field with a NULL value is the same as one...
How to Write Data to Text File in Excel VBA?	29 Oct, 2021 This VBA Program reads an Excel Range (Sales Data) and write to a Text file (Sales.txt) Excel VBA code to read data from an Excel file (Sales Data – Range “A1:E26”). Need two “For loop” for rows and columns. Write each value with a comma in the text file till the end of columns (write without comma only t...	[ { "code": null, "e": 28, "s": 0, "text": "\n29 Oct, 2021" }, { "code": null, "e": 116, "s": 28, "text": "This VBA Program reads an Excel Range (Sales Data) and write to a Text file (Sales.txt)" }, { "code": null, "e": 406, "s": 116, "text": "Excel VBA code to ...
How to scale an Image in ImageView to keep the aspect ratio in Android?	This example demonstrates how to scale an Image in ImageView to keep the aspect ratio in Android. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Step 2 − Add the following code to res/layout/activity_main.xml. <?xml version="1.0" encoding...	[ { "code": null, "e": 1285, "s": 1187, "text": "This example demonstrates how to scale an Image in ImageView to keep the aspect ratio in Android." }, { "code": null, "e": 1414, "s": 1285, "text": "Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill a...
LTRIM() Function in SQL Server	16 Dec, 2020 LTRIM() function helps to return remove all the space characters found on the left-hand side of the string. Syntax : LTRIM(string, [trim_string]) Parameter : string – The string from which the leading space character would be removed. trim_string – It is an optional parameter that specifies the characters ...	[ { "code": null, "e": 28, "s": 0, "text": "\n16 Dec, 2020" }, { "code": null, "e": 136, "s": 28, "text": "LTRIM() function helps to return remove all the space characters found on the left-hand side of the string." }, { "code": null, "e": 145, "s": 136, "text":...
Difference between Natural join and Inner Join in SQL	31 Aug, 2021 Prerequisite – Join (Inner, Left, Right and Full Joins) 1. Natural Join : Natural Join joins two tables based on same attribute name and datatypes. The resulting table will contain all the attributes of both the table but keep only one copy of each common column. Example: Consider the two tables given bel...	[ { "code": null, "e": 53, "s": 25, "text": "\n31 Aug, 2021" }, { "code": null, "e": 318, "s": 53, "text": "Prerequisite – Join (Inner, Left, Right and Full Joins) 1. Natural Join : Natural Join joins two tables based on same attribute name and datatypes. The resulting table will c...
MVVM â Validations	In this chapter, we will learn about validations. We will also look at a clean way to do validation with what WPF bindings already support but tying it into MVVM components. When your application starts accepting data input from end users you need to consider validating that input. When your application starts acceptin...	[ { "code": null, "e": 2116, "s": 1942, "text": "In this chapter, we will learn about validations. We will also look at a clean way to do validation with what WPF bindings already support but tying it into MVVM components." }, { "code": null, "e": 2225, "s": 2116, "text": "When you...
How to Change Contrast in OpenCV using C++?	Changing brightness and contrast are frequent editing effect in image processing.Here, we will learn how to change the contrast of images. Contrast controls the sharpness of the image. Higher the contrast the sharper the image, lower the contrast the smother the image. Changing the contrast means increasing the weight ...	[ { "code": null, "e": 1332, "s": 1062, "text": "Changing brightness and contrast are frequent editing effect in image processing.Here, we will learn how to change the contrast of images. Contrast controls the sharpness of the image. Higher the contrast the sharper the image, lower the contrast the sm...
Java Program to convert LocalDate to java.util.Date in UTC	Set the LocalDate to the current date − LocalDate date = LocalDate.now(); Convert to java.util.Date in UTC − Date.from(date.atStartOfDay().toInstant(ZoneOffset.UTC)) Live Demo import java.time.LocalDate; import java.time.ZoneOffset; import java.util.Date; public class Demo { public static void main(String[] args) {...	[ { "code": null, "e": 1102, "s": 1062, "text": "Set the LocalDate to the current date −" }, { "code": null, "e": 1136, "s": 1102, "text": "LocalDate date = LocalDate.now();" }, { "code": null, "e": 1171, "s": 1136, "text": "Convert to java.util.Date in UTC −" ...
Recursive Program for Binary to Decimal in C++	We are given a string containing a binary number. The goal is to find the equivalent decimal number using the recursive method. A binary number can be converted to decimal using following method-: Traverse from LSB to MSB and multiply each with power of 2i Where 0<=i<=no. of digits and all previous results to it. Input...	[ { "code": null, "e": 1190, "s": 1062, "text": "We are given a string containing a binary number. The goal is to find the equivalent decimal number using the recursive method." }, { "code": null, "e": 1377, "s": 1190, "text": "A binary number can be converted to decimal using foll...
RSA Cipher Encryption	In this chapter, we will focus on different implementation of RSA cipher encryption and the functions involved for the same. You can refer or include this python file for implementing RSA cipher algorithm implementation. The modules included for the encryption algorithm are as follows − from Crypto.PublicKey import RSA...	[ { "code": null, "e": 2513, "s": 2292, "text": "In this chapter, we will focus on different implementation of RSA cipher encryption and the functions involved for the same. You can refer or include this python file for implementing RSA cipher algorithm implementation." }, { "code": null, ...
The __index metamethod in Lua Programming	Whenever we try to access a field that hasn’t been declared in a table in Lua, the answer we get is nil. While this is true, but the reason for it is that when such access happens, the interpreter triggers a search for an __index metamethod and if it doesn’t find any method named __index, then we get nil as an answer; ...	[ { "code": null, "e": 1465, "s": 1062, "text": "Whenever we try to access a field that hasn’t been declared in a table in Lua, the answer we get is nil. While this is true, but the reason for it is that when such access happens, the interpreter triggers a search for an __index metamethod and if it do...
How to design Responsive card-deck with fixed width in Bootstrap ?	01 Jun, 2020 Bootstrap card provide us a lot of functionality that we can play around. We can also make them responsive and also of fixed size all depends on our need. So the code for the fixed size bootstrap card deck is given below. We have provided the code without using CSS properties so it looks much simpler and e...	[ { "code": null, "e": 28, "s": 0, "text": "\n01 Jun, 2020" }, { "code": null, "e": 356, "s": 28, "text": "Bootstrap card provide us a lot of functionality that we can play around. We can also make them responsive and also of fixed size all depends on our need. So the code for the ...
Types of Observables in RxJava	21 Sep, 2021 In the model-view paradigm, this class represents an observable object, or “data.” It can be subclassed in order to represent an object that the application wishes to watch. The issue is that you’re creating software that will render data describing a three-dimensional scene in two dimensions. The applicat...	[ { "code": null, "e": 28, "s": 0, "text": "\n21 Sep, 2021" }, { "code": null, "e": 416, "s": 28, "text": "In the model-view paradigm, this class represents an observable object, or “data.” It can be subclassed in order to represent an object that the application wishes to watch. T...
Principles of Programming Languages - GeeksforGeeks	22 Jan, 2014 Program main; Var ... Procedure A1; Var ... Call A2; End A1 Procedure A2; Var ... Procedure A21; Var ... Call A1; End A21 Call A21; End A21 Call A1; End main. I. A programming language which does not permit glob...	[ { "code": null, "e": 29577, "s": 29549, "text": "\n22 Jan, 2014" }, { "code": null, "e": 29832, "s": 29577, "text": "Program main;\n Var ...\n \n Procedure A1;\n Var ...\n Call A2;\n End A1\n \n Procedure A2;\n Var ...\n \n Procedure A21;\n ...
Hide and Unhide The Window in Tkinter – Python	04 Jul, 2021 Prerequisite: Tkinter Python offers multiple options for developing GUI (Graphical User Interface). Out of all the GUI methods, Tkinter is the most commonly used method. It is a standard Python interface to the Tk GUI toolkit shipped with Python. Python with Tkinter is the fastest and easiest way to create...	[ { "code": null, "e": 53, "s": 25, "text": "\n04 Jul, 2021" }, { "code": null, "e": 75, "s": 53, "text": "Prerequisite: Tkinter" }, { "code": null, "e": 425, "s": 75, "text": "Python offers multiple options for developing GUI (Graphical User Interface). Out of ...
Maximum Product Cutting \| DP-36	21 Jun, 2022 Given a rope of length n meters, cut the rope in different parts of integer lengths in a way that maximizes product of lengths of all parts. You must make at least one cut. Assume that the length of rope is more than 2 meters. Examples: Input: n = 2 Output: 1 (Maximum obtainable product is 1*1) Input: n...	[ { "code": null, "e": 54, "s": 26, "text": "\n21 Jun, 2022" }, { "code": null, "e": 282, "s": 54, "text": "Given a rope of length n meters, cut the rope in different parts of integer lengths in a way that maximizes product of lengths of all parts. You must make at least one cut. A...
tcpdump Command in Linux with Examples	03 Jun, 2020 tcpdump is a packet sniffing and packet analyzing tool for a System Administrator to troubleshoot connectivity issues in Linux. It is used to capture, filter, and analyze network traffic such as TCP/IP packets going through your system. It is many times used as a security tool as well. It saves the capture...	[ { "code": null, "e": 28, "s": 0, "text": "\n03 Jun, 2020" }, { "code": null, "e": 455, "s": 28, "text": "tcpdump is a packet sniffing and packet analyzing tool for a System Administrator to troubleshoot connectivity issues in Linux. It is used to capture, filter, and analyze netw...
Difference between Procedural and Non-Procedural language	28 May, 2019 Procedural Language:In procedural languages, the program code is written as a sequence of instructions. User has to specify “what to do” and also “how to do” (step by step procedure). These instructions are executed in the sequential order. These instructions are written to solve specific problems. Example...	[ { "code": null, "e": 53, "s": 25, "text": "\n28 May, 2019" }, { "code": null, "e": 353, "s": 53, "text": "Procedural Language:In procedural languages, the program code is written as a sequence of instructions. User has to specify “what to do” and also “how to do” (step by step pr...
Sum of n digit numbers divisible by a given number	02 Jun, 2022 Given n and a number, the task is to find the sum of n digit numbers that are divisible by given number. Examples: Input : n = 2, number = 7 Output : 728 There are thirteen n digit numbers that are divisible by 7. Numbers are : 14+ 21 + 28 + 35 + 42 + 49 + 56 + 63 +70 + 77 + 84 + 91 + 98. Input : n = 3...	[ { "code": null, "e": 54, "s": 26, "text": "\n02 Jun, 2022" }, { "code": null, "e": 159, "s": 54, "text": "Given n and a number, the task is to find the sum of n digit numbers that are divisible by given number." }, { "code": null, "e": 170, "s": 159, "text": "...
time.Nanoseconds() Function in Golang With Examples	21 Apr, 2020 In Go language, time packages supplies functionality for determining as well as viewing time. The Nanoseconds() function in Go language is used to find the duration of time in form of an integer nanosecond count. Moreover, this function is defined under the time package. Here, you need to import the “time”...	[ { "code": null, "e": 28, "s": 0, "text": "\n21 Apr, 2020" }, { "code": null, "e": 377, "s": 28, "text": "In Go language, time packages supplies functionality for determining as well as viewing time. The Nanoseconds() function in Go language is used to find the duration of time in...
SQL \| Remove Duplicates without Distinct	06 Apr, 2020 DISTINCT is useful in certain circumstances, but it has drawback that it can increase load on the query engine to perform the sort (since it needs to compare the result set to itself to remove duplicates) Below are alternate solutions : 1. Remove Duplicates Using Row_Number. WITH CTE (Col1, Col2, Col3, Dup...	[ { "code": null, "e": 52, "s": 24, "text": "\n06 Apr, 2020" }, { "code": null, "e": 257, "s": 52, "text": "DISTINCT is useful in certain circumstances, but it has drawback that it can increase load on the query engine to perform the sort (since it needs to compare the result set t...
Where is an object stored if it is created inside a block in C++?	26 Nov, 2018 There are two parts of memory in which an object can be stored: stack – Memory from the stack is used by all the members which are declared inside blocks/functions. Note that the main is also a function.heap – This memory is unused and can be used to dynamically allocate the memory at runtime. stack – Memo...	[ { "code": null, "e": 53, "s": 25, "text": "\n26 Nov, 2018" }, { "code": null, "e": 117, "s": 53, "text": "There are two parts of memory in which an object can be stored:" }, { "code": null, "e": 348, "s": 117, "text": "stack – Memory from the stack is used by ...
How to check if a character in a string is a letter in Python?	You can use the isalpha() method from string class. It checks if a string consists only of alphabets. You can also use it to check if a character is an alphabet or not. For example, if you want to check if char at 5th index is letter or not, >>> s = "Hello people" >>> s[4].isalpha() True You can also check whole string...	[ { "code": null, "e": 1429, "s": 1187, "text": "You can use the isalpha() method from string class. It checks if a string consists only of alphabets. You can also use it to check if a character is an alphabet or not. For example, if you want to check if char at 5th index is letter or not," }, { ...
JavaTuples \| Introduction	16 Sep, 2021 The word “tuple” means “a data structure consisting of multiple parts”. Hence Tuples can be defined as a data structure that can hold multiple values and these values may/may not be related to each other. Example: [Geeks, 123, &#*@] In this example, the values in the tuple are not at all related to each o...	[ { "code": null, "e": 53, "s": 25, "text": "\n16 Sep, 2021" }, { "code": null, "e": 258, "s": 53, "text": "The word “tuple” means “a data structure consisting of multiple parts”. Hence Tuples can be defined as a data structure that can hold multiple values and these values may/may...
How to download a CSV file in PHP that is triggered through a URL ?	11 Jun, 2020 Why do we need to download CSV files?Comma-Separated Values or CSV files are an important part of computer science. Almost every dataset required for training data science models are in CSV file format. Datasets are available all over the internet and it becomes the utmost necessity to have them readily on...	[ { "code": null, "e": 53, "s": 25, "text": "\n11 Jun, 2020" }, { "code": null, "e": 637, "s": 53, "text": "Why do we need to download CSV files?Comma-Separated Values or CSV files are an important part of computer science. Almost every dataset required for training data science mo...
Python Program to Split the array and add the first part to the end	26 Apr, 2020 There is a given an array and split it from a specified position, and move the first part of array add to the end. Examples: Input : arr[] = {12, 10, 5, 6, 52, 36} k = 2 Output : arr[] = {5, 6, 52, 36, 12, 10} Explanation : Split from index 2 and first part {12, 10} add to the end . Input : a...	[ { "code": null, "e": 54, "s": 26, "text": "\n26 Apr, 2020" }, { "code": null, "e": 169, "s": 54, "text": "There is a given an array and split it from a specified position, and move the first part of array add to the end." }, { "code": null, "e": 179, "s": 169, ...
Rename function in C/C++	The C library function int rename(const char old_filename, const char new_filename) causes the filename referred to by old_filename to be changed to new_filename Following is the declaration for rename() function. int rename(const char old_filename, const char new_filename) The parameters are old_filename − This is...	[ { "code": null, "e": 1351, "s": 1187, "text": "The C library function int rename(const char old_filename, const char new_filename) causes the filename referred to by old_filename to be changed to new_filename" }, { "code": null, "e": 1403, "s": 1351, "text": "Following is the d...
How to check if String is empty in Java?	The isEmpty() method of the String class returns true if the length of the current string is 0. Live Demo import java.lang.*; public class StringDemo { public static void main(String[] args) { String str = "tutorialspoint"; //prints length of string System.out.println("length of string = " + str.l...	[ { "code": null, "e": 1158, "s": 1062, "text": "The isEmpty() method of the String class returns true if the length of the current string is 0." }, { "code": null, "e": 1168, "s": 1158, "text": "Live Demo" }, { "code": null, "e": 1515, "s": 1168, "text": "impor...
How to display column values as CSV in MySQL?	To display column values as CSV, use GROUP_CONCAT(). Let us first create a table − mysql> create table DemoTable786 ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentName varchar(100) ) AUTO_INCREMENT=101; Query OK, 0 rows affected (0.70 sec) Insert some records in the table using insert command − mys...	[ { "code": null, "e": 1115, "s": 1062, "text": "To display column values as CSV, use GROUP_CONCAT()." }, { "code": null, "e": 1145, "s": 1115, "text": "Let us first create a table −" }, { "code": null, "e": 1323, "s": 1145, "text": "mysql> create table DemoTabl...
Sqoop - Import All Tables	This chapter describes how to import all the tables from the RDBMS database server to the HDFS. Each table data is stored in a separate directory and the directory name is same as the table name. The following syntax is used to import all tables. $ sqoop import-all-tables (generic-args) (import-args) $ sqoop-import-al...	[ { "code": null, "e": 1983, "s": 1787, "text": "This chapter describes how to import all the tables from the RDBMS database server to the HDFS. Each table data is stored in a separate directory and the directory name is same as the table name." }, { "code": null, "e": 2034, "s": 1983,...
Ishaan's Internship \| Practice \| GeeksforGeeks	Ishaan wants to intern at GeeksForGeeks but for that he has to go through a test. There are n candidates applying for the internship including Ishaan and only one is to be selected. Since he wants to qualify he asks you to help him. The test is as follows. The candidates are asked to stand in a line at positions 1 to n...	[ { "code": null, "e": 859, "s": 238, "text": "Ishaan wants to intern at GeeksForGeeks but for that he has to go through a test. There are n candidates applying for the internship including Ishaan and only one is to be selected.\nSince he wants to qualify he asks you to help him. The test is as follow...
Grabbing Geodata From Your Photo Library Using Python \| by Aaron S \| Towards Data Science	So one of the many talents my girlfriend has is photography. However she has over 100,000 photos which require sorting out primarily into year and city. She primarily does location based photography and finds writing essays about certain areas of the world easier when she has all of them in one place. This is a mammoth...	[ { "code": null, "e": 475, "s": 172, "text": "So one of the many talents my girlfriend has is photography. However she has over 100,000 photos which require sorting out primarily into year and city. She primarily does location based photography and finds writing essays about certain areas of the worl...
Finding a specific item in subdocument with MongoDB?	To get a specific item in a sudocument, use the dot(.) notation. Let us create a collection with documents − > db.demo81.insertOne({"StudentDetails":[{"StudentName":"Carol","StudentSubject":"Java"},{ "StudentName" : "David", "StudentSubject" : "MongoDB" }]}); { "acknowledged" : true, "insertedId" : ObjectId("5e2b...	[ { "code": null, "e": 1171, "s": 1062, "text": "To get a specific item in a sudocument, use the dot(.) notation. Let us create a collection with documents −" }, { "code": null, "e": 1872, "s": 1171, "text": "> db.demo81.insertOne({\"StudentDetails\":[{\"StudentName\":\"Carol\",\"S...
How to check if a div is visible using jQuery?	You can use .is(‘:visible’) selects all elements that are visible. <html> <head> <title>divvisible</title> <script src="../../Scripts/jquery-1.4.1.min.js" type="text/javascript"></script> <script type="text/javascript"> $(document).ready(function () { $("button").click(function () { var...	[ { "code": null, "e": 1129, "s": 1062, "text": "You can use .is(‘:visible’) selects all elements that are visible." }, { "code": null, "e": 1744, "s": 1129, "text": "<html>\n<head>\n<title>divvisible</title>\n <script src=\"../../Scripts/jquery-1.4.1.min.js\" type=\"text/javascr...