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ML \| BIRCH Clustering	20 Jun, 2022 Clustering algorithms like K-means clustering do not perform clustering very efficiently and it is difficult to process large datasets with a limited amount of resources (like memory or a slower CPU). So, regular clustering algorithms do not scale well in terms of running time and quality as the size of th...	[ { "code": null, "e": 28, "s": 0, "text": "\n20 Jun, 2022" }, { "code": null, "e": 2100, "s": 28, "text": "Clustering algorithms like K-means clustering do not perform clustering very efficiently and it is difficult to process large datasets with a limited amount of resources (lik...
Python – Pearson Correlation Test Between Two Variables	15 Sep, 2021 What is correlation test? The strength of the association between two variables is known as correlation test. For instance, if we are interested to know whether there is a relationship between the heights of fathers and sons, a correlation coefficient can be calculated to answer this question.For know more...	[ { "code": null, "e": 28, "s": 0, "text": "\n15 Sep, 2021" }, { "code": null, "e": 408, "s": 28, "text": "What is correlation test? The strength of the association between two variables is known as correlation test. For instance, if we are interested to know whether there is a rel...
How to Print all Keys of the LinkedHashMap in Java?	17 Dec, 2020 LinkedHashMap is a predefined class in Java that is similar to HashMap, contains a key and its respective value. Unlike HashMap, In LinkedHashMap insertion order is preserved. The task is to print all the Keys present in our LinkedHashMap in java. We have to iterate through each Key in our LinkedHashMap an...	[ { "code": null, "e": 28, "s": 0, "text": "\n17 Dec, 2020" }, { "code": null, "e": 347, "s": 28, "text": "LinkedHashMap is a predefined class in Java that is similar to HashMap, contains a key and its respective value. Unlike HashMap, In LinkedHashMap insertion order is preserved....
Interact with files in Python	12 Dec, 2019 Python too supports file handling and allows users to handle files i.e., to read, write, create, delete and move files, along with many other file handling options, to operate on files. The concept of file handling has stretched over various other languages, but the implementation is either complicated or ...	[ { "code": null, "e": 28, "s": 0, "text": "\n12 Dec, 2019" }, { "code": null, "e": 422, "s": 28, "text": "Python too supports file handling and allows users to handle files i.e., to read, write, create, delete and move files, along with many other file handling options, to operate...
SQL \| Date Functions (Set-1)	20 Jul, 2018 In SQL, dates are complicated for newbies, since while working with a database, the format of the date in the table must be matched with the input date in order to insert. In various scenarios instead of date, datetime (time is also involved with date) is used. Some of the important date functions have bee...	[ { "code": null, "e": 53, "s": 25, "text": "\n20 Jul, 2018" }, { "code": null, "e": 315, "s": 53, "text": "In SQL, dates are complicated for newbies, since while working with a database, the format of the date in the table must be matched with the input date in order to insert. In...
Python \| math.isqrt() method	04 Dec, 2020 Math module in Python contains a number of mathematical operations, which can be performed with ease using the module. math.isqrt() method in Python is used to get the integer square root of the given non-negative integer value n. This method returns the floor value of the exact square root of n or equival...	[ { "code": null, "e": 28, "s": 0, "text": "\n04 Dec, 2020" }, { "code": null, "e": 383, "s": 28, "text": "Math module in Python contains a number of mathematical operations, which can be performed with ease using the module. math.isqrt() method in Python is used to get the integer...
Lex program to find the length of the longest word	30 Apr, 2019 Lex is a computer program that generates lexical analyzers. Lex reads an input stream specifying the lexical analyzer and outputs source code implementing the lexer in the C programming language. The commands for executing the lex program are: lex abc.l (abc is the file name) cc lex.yy.c -efl ./a.out Let’...	[ { "code": null, "e": 53, "s": 25, "text": "\n30 Apr, 2019" }, { "code": null, "e": 249, "s": 53, "text": "Lex is a computer program that generates lexical analyzers. Lex reads an input stream specifying the lexical analyzer and outputs source code implementing the lexer in the C ...
exit command in Linux with Examples	15 May, 2019 exit command in linux is used to exit the shell where it is currently running. It takes one more parameter as [N] and exits the shell with a return of status N. If n is not provided, then it simply returns the status of last command that is executed. Syntax: exit [n] Options for exit command – exit: Exit W...	[ { "code": null, "e": 28, "s": 0, "text": "\n15 May, 2019" }, { "code": null, "e": 279, "s": 28, "text": "exit command in linux is used to exit the shell where it is currently running. It takes one more parameter as [N] and exits the shell with a return of status N. If n is not pr...
Minimum flips or swapping of adjacent characters required to make a string equal to another	18 Jun, 2021 Given two binary strings A and B of length N, the task is to convert the string A to B by either flipping any character of A or swapping adjacent characters of A minimum number of times. If it is not possible to make both the strings equal, print -1. Examples: Input: A = “10010010”, B = “00001000” Output:...	[ { "code": null, "e": 28, "s": 0, "text": "\n18 Jun, 2021" }, { "code": null, "e": 279, "s": 28, "text": "Given two binary strings A and B of length N, the task is to convert the string A to B by either flipping any character of A or swapping adjacent characters of A minimum numbe...
enchant.Dict() in Python	03 Jun, 2020 Enchant is a module in python which is used to check the spelling of a word, gives suggestions to correct words. Also, gives antonym and synonym of words. It checks whether a word exists in dictionary or not. enchant.Dict() is an inbuilt method of enchant module. It is used to create a Dict object, which i...	[ { "code": null, "e": 28, "s": 0, "text": "\n03 Jun, 2020" }, { "code": null, "e": 237, "s": 28, "text": "Enchant is a module in python which is used to check the spelling of a word, gives suggestions to correct words. Also, gives antonym and synonym of words. It checks whether a ...
Program to find area of a Trapezoid	22 Jun, 2022 Definition of Trapezoid : A Trapezoid is a convex quadrilateral with at least one pair of parallel sides. The parallel sides are called the bases of the trapezoid and the other two sides which are not parallel are referred to as the legs. There can also be two pairs of bases. In the above figure CD \|\| AB...	[ { "code": null, "e": 28, "s": 0, "text": "\n22 Jun, 2022" }, { "code": null, "e": 307, "s": 28, "text": "Definition of Trapezoid : A Trapezoid is a convex quadrilateral with at least one pair of parallel sides. The parallel sides are called the bases of the trapezoid and the othe...
Raja Software Labs Interview Experience	06 Nov, 2020 Raja Software Labs visited our college for campus hiring. The selection process included aptitude tests, coding tests, and 3 technical interviews. Aptitude Test: Test duration of 30 min, It consists of 20 MCQ questions. No negative marking test was taken on google forms. Programming Test: Test duration of ...	[ { "code": null, "e": 52, "s": 24, "text": "\n06 Nov, 2020" }, { "code": null, "e": 199, "s": 52, "text": "Raja Software Labs visited our college for campus hiring. The selection process included aptitude tests, coding tests, and 3 technical interviews." }, { "code": null,...
How to display multiple images in one figure correctly in matplotlib?	To display multiple images in one figure, we can follow the steps given below − Initialize the number of rows and cols. nrowsncols subplot will be created in the current figure. nrows = 2 and ncols = 2, i.e., 22 = 4 subplots can be created. Initialize the number of rows and cols. nrows*ncols subplot will be created i...	[ { "code": null, "e": 1267, "s": 1187, "text": "To display multiple images in one figure, we can follow the steps given below −" }, { "code": null, "e": 1430, "s": 1267, "text": "Initialize the number of rows and cols. nrows*ncols subplot will be created in the current figure. nro...
How to Concatenate image using Pillow in Python ?	07 Apr, 2021 Prerequisites: Python Pillow Concatenate image means joining of two images. We can merge any image whether it has different pixels, different image formats namely, ‘jpeg’, ‘png’, ‘gif’, ‘tiff’, etc. In python, we can join two images using the Python image library also known as the pillow library. In this a...	[ { "code": null, "e": 52, "s": 24, "text": "\n07 Apr, 2021" }, { "code": null, "e": 81, "s": 52, "text": "Prerequisites: Python Pillow" }, { "code": null, "e": 420, "s": 81, "text": "Concatenate image means joining of two images. We can merge any image whether ...
How to run a given array of promises in series in JavaScript ?	23 Apr, 2021 Given an array of Promises, we have to run that in a series. To do this task, we can use then(), to run the next promise, after completion of a promise. Approach: The then() method returns a Promise, which helps us to chain promises/methods. The Promise.resolve() method executes the first callback, and whe...	[ { "code": null, "e": 28, "s": 0, "text": "\n23 Apr, 2021" }, { "code": null, "e": 181, "s": 28, "text": "Given an array of Promises, we have to run that in a series. To do this task, we can use then(), to run the next promise, after completion of a promise." }, { "code": ...
How to find all the values of particular key of MongoDB Database using Node.js ?	12 Feb, 2021 MongoDB module: This module of Node.js is used for connecting the MongoDB database as well as used for manipulating the collections and databases in MongoDB. The mongodb.connect() is the main method that is used for connecting to the MongoDB database which is running on a particular server on your machine ...	[ { "code": null, "e": 28, "s": 0, "text": "\n12 Feb, 2021" }, { "code": null, "e": 552, "s": 28, "text": "MongoDB module: This module of Node.js is used for connecting the MongoDB database as well as used for manipulating the collections and databases in MongoDB. The mongodb.conne...
Difference between Recursive Predictive Descent Parser and Non-Recursive Predictive Descent Parser	14 Jul, 2021 Prerequisite – Recursive Descent Parser 1. Recursive Predictive Descent Parser : Recursive Descent Parser is a top-down method of syntax analysis in which a set of recursive procedures is used to process input. One procedure is associated with each non-terminal of a grammar. Here we consider a simple form...	[ { "code": null, "e": 54, "s": 26, "text": "\n14 Jul, 2021" }, { "code": null, "e": 95, "s": 54, "text": "Prerequisite – Recursive Descent Parser " }, { "code": null, "e": 884, "s": 95, "text": "1. Recursive Predictive Descent Parser : Recursive Descent Parser ...
Get topmost N records within each group of a Pandas DataFrame	28 Jul, 2020 Firstly, the pandas dataframe stores data in the form of a table. In some situations we need to retrieve data from dataframe according to some conditions. Such as if we want to get top N records of each group of the dataframe. Here we will use Groupby() function of pandas to group the columns. So we can do...	[ { "code": null, "e": 28, "s": 0, "text": "\n28 Jul, 2020" }, { "code": null, "e": 351, "s": 28, "text": "Firstly, the pandas dataframe stores data in the form of a table. In some situations we need to retrieve data from dataframe according to some conditions. Such as if we want t...
Merge Sort for Linked Lists in JavaScript	23 Jun, 2022 Prerequisite: Merge Sort for Linked Lists Merge sort is often preferred for sorting a linked list. The slow random-access performance of a linked list makes some other algorithms (such as quicksort) perform poorly, and others (such as heapsort) completely impossible. In this post, Merge sort for linked li...	[ { "code": null, "e": 52, "s": 24, "text": "\n23 Jun, 2022" }, { "code": null, "e": 405, "s": 52, "text": "Prerequisite: Merge Sort for Linked Lists Merge sort is often preferred for sorting a linked list. The slow random-access performance of a linked list makes some other algori...
Mathworks EDG Program Interview Experience \| On-Campus	18 Aug, 2021 Mathworks conducted an online test on 13th August, Friday in our college, out of which around 25 people were shortlisted. Coding Test: The online coding test (90 minutes) had MCQs and 2 coding questions. We had the liberty to choose any 2 languages out of C, C++, Java, Python. The first coding question was...	[ { "code": null, "e": 54, "s": 26, "text": "\n18 Aug, 2021" }, { "code": null, "e": 176, "s": 54, "text": "Mathworks conducted an online test on 13th August, Friday in our college, out of which around 25 people were shortlisted." }, { "code": null, "e": 332, "s": 1...
How can I get the list of files in a directory using C or C++?	Let us consider the following C++ sample code to get the list of files in a directory. Begin Declare a poniter dr to the DIR type. Declare another pointer en of the dirent structure. Call opendir() function to open all file in present directory. Initialize dr pointer as dr = opendir("."). If(dr) wh...	[ { "code": null, "e": 1274, "s": 1187, "text": "Let us consider the following C++ sample code to get the list of files in a directory." }, { "code": null, "e": 1651, "s": 1274, "text": "Begin\n Declare a poniter dr to the DIR type.\n Declare another pointer en of the dirent st...
ReactJS - Creating a React Application	As we learned earlier, React library can be used in both simple and complex application. Simple application normally includes the React library in its script section. In complex application, developers have to split the code into multiple files and organize the code into a standard structure. Here, React toolchain prov...	[ { "code": null, "e": 2627, "s": 2167, "text": "As we learned earlier, React library can be used in both simple and complex application. Simple application normally includes the React library in its script section. In complex application, developers have to split the code into multiple files and orga...
PostgreSQL - LIMIT clause - GeeksforGeeks	28 Aug, 2020 The PostgreSQL LIMIT clause is used to get a subset of rows generated by a query. It is an optional clause of the SELECT statement. Syntax: SELECT * FROM table_name LIMIT n; Now let’s analyze the syntax above: The above syntax returns “n” no. of query results. If “n” is skipped or equal to NULL it returns ...	[ { "code": null, "e": 24060, "s": 24032, "text": "\n28 Aug, 2020" }, { "code": null, "e": 24192, "s": 24060, "text": "The PostgreSQL LIMIT clause is used to get a subset of rows generated by a query. It is an optional clause of the SELECT statement." }, { "code": null, ...
C++ Program to check if a given String is Palindrome or not - GeeksforGeeks	21 Jul, 2021 Given a string S consisting of N characters of the English alphabet, the task is to check if the given string is a palindrome. If the given string is a palindrome, then print “Yes“. Otherwise, print “No“. Note: A string is said to be palindrome if the reverse of the string is the same as the string. Examp...	[ { "code": null, "e": 25788, "s": 25760, "text": "\n21 Jul, 2021" }, { "code": null, "e": 25993, "s": 25788, "text": "Given a string S consisting of N characters of the English alphabet, the task is to check if the given string is a palindrome. If the given string is a palindrome,...
Order of Constructor/ Destructor Call in C++	19 Apr, 2022 Prerequisite: Constructors Whenever we create an object of a class, the default constructor of that class is invoked automatically to initialize the members of the class. If we inherit a class from another class and create an object of the derived class, it is clear that the default constructor of the der...	[ { "code": null, "e": 52, "s": 24, "text": "\n19 Apr, 2022" }, { "code": null, "e": 224, "s": 52, "text": "Prerequisite: Constructors Whenever we create an object of a class, the default constructor of that class is invoked automatically to initialize the members of the class. " ...
Drop shadow for PNG image using CSS	22 Apr, 2019 There is a basic way to add shadow effect on images but that effect will behave like the image is square, so there is another way to do the shadow which is basically applied on PNG images. The normal shadow effect will always put a square image shadow for the image which can be squared or cannot be squared...	[ { "code": null, "e": 28, "s": 0, "text": "\n22 Apr, 2019" }, { "code": null, "e": 480, "s": 28, "text": "There is a basic way to add shadow effect on images but that effect will behave like the image is square, so there is another way to do the shadow which is basically applied o...
EnvironmentError Exception in Python	21 Aug, 2020 EnvironmentError is the base class for errors that come from outside of Python (the operating system, file system, etc.). It is the parent class for IOError and OSError exceptions. exception IOError – It is raised when an I/O operation (when a method of a file object ) fails. e.g “File not found” or “Disk...	[ { "code": null, "e": 28, "s": 0, "text": "\n21 Aug, 2020" }, { "code": null, "e": 210, "s": 28, "text": "EnvironmentError is the base class for errors that come from outside of Python (the operating system, file system, etc.). It is the parent class for IOError and OSError except...
Convert list to dataframe with specific column names in R	12 Dec, 2021 A list contains different types of objects as their components. The components may belong to different data types or different dimensions. Vector can be useful components of a list and can be easily mapped as the rows or columns of a dataframe. Each column in the dataframe is referenced using a unique name...	[ { "code": null, "e": 28, "s": 0, "text": "\n12 Dec, 2021" }, { "code": null, "e": 545, "s": 28, "text": "A list contains different types of objects as their components. The components may belong to different data types or different dimensions. Vector can be useful components of a...
EasyMock - createMock	So far, we've used annotations to create mocks. EasyMock provides various methods to create mock objects. EasyMock.createMock() creates mocks without bothering about the order of method calls that the mock is going to make in due course of its action. calcService = EasyMock.createMock(CalculatorService.class); Step 1:...	[ { "code": null, "e": 2295, "s": 2043, "text": "So far, we've used annotations to create mocks. EasyMock provides various methods to create mock objects. EasyMock.createMock() creates mocks without bothering about the order of method calls that the mock is going to make in due course of its action." ...
Ways to increment Iterator from inside the For loop in Python	12 Feb, 2021 For loops, in general, are used for sequential traversal. It falls under the category of definite iteration. Definite iterations mean the number of repetitions is specified explicitly in advance. But have you ever wondered, what happens, if you try to increment the value of the iterator from inside the for...	[ { "code": null, "e": 53, "s": 25, "text": "\n12 Feb, 2021" }, { "code": null, "e": 422, "s": 53, "text": "For loops, in general, are used for sequential traversal. It falls under the category of definite iteration. Definite iterations mean the number of repetitions is specified e...
How to implement stack using priority queue or heap?	08 Feb, 2018 How to Implement stack using a priority queue(using min heap)?. Asked In: Microsoft, Adobe. Solution: In priority queue, we assign priority to the elements that are being pushed. A stack requires elements to be processed in Last in First Out manner. The idea is to associate a count that determines when it ...	[ { "code": null, "e": 54, "s": 26, "text": "\n08 Feb, 2018" }, { "code": null, "e": 118, "s": 54, "text": "How to Implement stack using a priority queue(using min heap)?." }, { "code": null, "e": 146, "s": 118, "text": "Asked In: Microsoft, Adobe." }, { ...
Maximum number of Unique integers in Sub-Array of given size	26 Oct, 2021 Given an array of N integers and a number M. The task is to find out the maximum number of unique integers among all possible contiguous subarrays of size M. Examples: Input : arr[] = {5, 3, 5, 2, 3, 2}, M = 3 Output : 3 Explanation: In the sample test case, there are 4 subarrays of size 3. s1 = (5, 3, 5)...	[ { "code": null, "e": 54, "s": 26, "text": "\n26 Oct, 2021" }, { "code": null, "e": 212, "s": 54, "text": "Given an array of N integers and a number M. The task is to find out the maximum number of unique integers among all possible contiguous subarrays of size M." }, { "c...
Externalizable interface in Java	11 Jan, 2022 Externalization serves the purpose of custom Serialization, where we can decide what to store in stream.Externalizable interface present in java.io, is used for Externalization which extends Serializable interface. It consist of two methods which we have to override to write/read object into/from stream wh...	[ { "code": null, "e": 52, "s": 24, "text": "\n11 Jan, 2022" }, { "code": null, "e": 370, "s": 52, "text": "Externalization serves the purpose of custom Serialization, where we can decide what to store in stream.Externalizable interface present in java.io, is used for Externalizati...
How to select the Date Picker In Selenium WebDriver?	We can select the date picker in Selenium. It is slightly difficult to handle calendar controls as the day, month and year selection can be represented via different UI. Sometimes they are represented by the dropdown or by forward and backward controls. Let us select the date picker as shown below. From Date − To Date ...	[ { "code": null, "e": 1357, "s": 1187, "text": "We can select the date picker in Selenium. It is slightly difficult to handle calendar controls as the day, month and year selection can be represented via different UI." }, { "code": null, "e": 1487, "s": 1357, "text": "Sometimes th...
Compute the minimum or maximum of two integers without branching	12 Jun, 2022 On some rare machines where branching is expensive, the below obvious approach to find minimum can be slow as it uses branching. C++ C Java Python3 C# Javascript /* The obvious approach to find minimum (involves branching) */int min(int x, int y){ return (x < y) ? x : y} //This code is contributed by Shub...	[ { "code": null, "e": 52, "s": 24, "text": "\n12 Jun, 2022" }, { "code": null, "e": 181, "s": 52, "text": "On some rare machines where branching is expensive, the below obvious approach to find minimum can be slow as it uses branching." }, { "code": null, "e": 185, ...
Text Split Effect using CSS	18 Feb, 2022 In this article, we will see how we can create a text split effect using CSS. HTML code is used to create the basic structure of the sections and CSS code is used to set the style. Approach: Create an HTML div element with the class “container”. Inside the “container”, create an HTML div with class “box”...	[ { "code": null, "e": 28, "s": 0, "text": "\n18 Feb, 2022" }, { "code": null, "e": 210, "s": 28, "text": "In this article, we will see how we can create a text split effect using CSS. HTML code is used to create the basic structure of the sections and CSS code is used to set the ...
Button in Android	17 Aug, 2021 In Android applications, a Button is a user interface that is used to perform some action when clicked or tapped. It is a very common widget in Android and developers often use it. This article demonstrates how to create a button in Android Studio. XML Attributes Description In this example step by step de...	[ { "code": null, "e": 54, "s": 26, "text": "\n17 Aug, 2021" }, { "code": null, "e": 303, "s": 54, "text": "In Android applications, a Button is a user interface that is used to perform some action when clicked or tapped. It is a very common widget in Android and developers often u...
Python: Iterating With Python Lambda	19 Dec, 2021 In Python, the lambda function is an anonymous function. This one expression is evaluated and returned. Thus, We can use lambda functions as a function object. In this article, we will learn how to iterate with lambda in python. Syntax: lambda variable : expression Where, variable is used in the expression...	[ { "code": null, "e": 53, "s": 25, "text": "\n19 Dec, 2021" }, { "code": null, "e": 282, "s": 53, "text": "In Python, the lambda function is an anonymous function. This one expression is evaluated and returned. Thus, We can use lambda functions as a function object. In this articl...
Scala Map transform() method with example	13 Aug, 2019 The transform() method is utilized to transform the elements of the map into a mutable map. Method Definition: def transform(f: (K, V) => V): Map.this.type Return Type: It transforms all the elements of the map and returns them into a mutable map. Example #1: // Scala program of transform()// method // Cr...	[ { "code": null, "e": 28, "s": 0, "text": "\n13 Aug, 2019" }, { "code": null, "e": 120, "s": 28, "text": "The transform() method is utilized to transform the elements of the map into a mutable map." }, { "code": null, "e": 184, "s": 120, "text": "Method Definit...
How to implement HorizontalScrollView like Gallery in Android?	Before getting into an example, we should know what is Horizontal Scroll View. Horizontal Scrollview provides by android.widget.HorizontalScrollView class. It is used to scroll child views in a horizontal direction. This example demonstrates how to use horizontal Scroll view. Step 1 − Create a new project in Android St...	[ { "code": null, "e": 1278, "s": 1062, "text": "Before getting into an example, we should know what is Horizontal Scroll View. Horizontal Scrollview provides by android.widget.HorizontalScrollView class. It is used to scroll child views in a horizontal direction." }, { "code": null, "e": ...