All Hard Articles
Polymorphism in R Programming
R language is evolving and it implements parametric polymorphism, which means that methods in R refer to functions, not classes. Parametric polymorphism primarily lets you… Read More
Picked
R-OOPs
R Language
Insert a new axis within a NumPy array
This post deals with the ways to increase the dimension of an array in NumPy. NumPy provides us with two different built-in functions to increase… Read More
Python numpy-arrayManipulation
Python-numpy
Python
Print the Forests of a Binary Tree after removal of given Nodes
Given a Binary Tree and an array arr[] consisting of values of nodes to be deleted, the task is to print Inorder Traversal of the… Read More
Inorder Traversal
PostOrder Traversal
Algorithms
Data Structures
DSA
Hash
Recursion
Searching
Tree
CommVault Interview Experience
On 6th August CommVault visits our campus. On GeeksforGeeks had a lot of interview archives and that helped me a lot to learn about the… Read More
CommVault
Marketing
Experiences
Interview Experiences
Longest Subarrays having each Array element as the maximum
Given an array arr[] of length N, the task is to find the longest subarray for each array element arr[i], which contains arr[i] as the… Read More
subarray
two-pointer-algorithm
Arrays
DSA
Mathematical
Searching
Maximum Count of pairs having equal Sum based on the given conditions
Given an array arr[] of length N containing array elements in the range [1, N], the task is to find the maximum number of pairs… Read More
frequency-counting
Arrays
DSA
Hash
Mathematical
Searching
Walmart Interview Experience (On Campus Virtual) August 2020
First Round (Online-Written Platform: HackerEarth): Time duration for this round was 1 hour and there are 25 MCQs both Easy and Gate Level Based with… Read More
Marketing
On-Campus
Walmart
Experiences
Interview Experiences
Minimum cost to sort an Array such that swapping X and Y costs XY
Given an array of N distinct positive integers. The task is to find the minimum cost to sort the given array. The cost of swapping… Read More
Arrays
DSA
Misc
Sorting
Count of permutations such that sum of K numbers from given range is even
Given a range [low, high], both inclusive, and an integer K, the task is to select K numbers from the range(a number can be chosen… Read More
Adobe
array-range-queries
permutation
Permutation and Combination
Arrays
DSA
Dynamic Programming
Greedy
Mathematical
Represent Tree using graphics in C/C++
Prerequisite: graphics.h, How to include graphics.h?  In C/C++ there is graphics.h header file which is used to create the object like line, circle, etc. Given an… Read More
computer-graphics
Trees
C++ Programs
DSA
Tree
Form validation using jQuery Poppa Plugin
In this article, we will learn how to implement form validation using jQuery Poppa plugin. It is a very easy to use, reliable, cross-browser friendly,… Read More
jQuery-Plugin
JQuery
Web Technologies
Building a Simple Neural Network in R Programming
The term Neural Networks refers to the system of neurons either organic or artificial in nature. In artificial intelligence reference, neural networks are a set… Read More
Picked
R Data-science
R Machine-Learning
R Language
PayPal Interview Experience | SDE 1 (On-Campus)
Online Assessment: 2 Questions – 120 Minutes Question 1 – Coloring nx3 board with 3 colors An automated painting system needs a program that can… Read More
Marketing
On-Campus
PayPal
Experiences
Interview Experiences
Minimum increments by index value required to obtain at least two equal Array elements
Given a strictly decreasing array arr[] consisting of N integers, the task is to find the minimum number of operations required to make at least… Read More
array-rearrange
Arrays
DSA
Greedy
Mathematical
Amazon Interview Experience | Off-campus AmazeWow
Round 1: Online Assessment The AmazeWow assessment: 28 technical questions + 2 coding questions. Time: 1.5 hours 1.  Evaluation of Postfix Expression      https://www.geeksforgeeks.org/stack-set-4-evaluation-postfix-expression/… Read More
Amazon
Amazon-WoW
Marketing
Off-Campus
Experiences
Interview Experiences
SVG text Element
The SVG <text> element is used to draw text. There are some attributes to customize the text. Syntax: <text x="x-coordinates" y="y-coordinates" dx="list of lengths" dy="list… Read More
HTML-SVG
SVG-Element
HTML
Web Technologies
GATE CS 2021 Official Important Dates
IIT Bombay is organizing GATE 2021. In this year, The GATE authority 2021 has made major changes and has also revised the syllabus of various… Read More
Computer Subject
GATE CS
Count of ways in which N can be represented as sum of Fibonacci numbers without repetition
Given a number N, the task is to find the number of ways in which the integer N can be represented as a sum of… Read More
Algorithms-Dynamic Programming
Fibonacci
Maths
Combinatorial
DSA
Dynamic Programming
Mathematical
Longest substring whose characters can be rearranged to form a Palindrome
Given a string S of length N which only contains lowercase alphabets. Find the length of the longest substring of S such that the characters… Read More
Algorithms-Dynamic Programming
Bit Algorithms
palindrome
substring
Bit Magic
DSA
Dynamic Programming
Mathematical
Strings
Maximum count of Equilateral Triangles that can be formed within given Equilateral Triangle
Given two integers N and K where N denotes the unit size of a bigger Equilateral Triangle, the task is to find the number of… Read More
triangle
DSA
Geometric
Greedy
Mathematical
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