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Why learning C Programming is a must?
C is a procedural programming language. It was initially developed by Dennis Ritchie between 1969 and 1973. It was mainly developed as a system programming… Read More »
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Must Do Coding Questions for Companies like Amazon, Microsoft, Adobe, …
As the placement season is back so are we to help you ace the interview. We have selected some most commonly asked and must do… Read More »
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Introduction to HTML CSS | Learn to Design your First Website in Just 1 Week
This is an introduction course to HTML and CSS which will help you learn all about the basics of HTML and CSS needed to begin… Read More »
Amazon Interview Experience (On-Campus for SDE-1) 2019
Amazon conducted a pool placement at our college in the month of feb 2019. We were shared the link for a test hosted on HackerEarth… Read More »
How to face Infosys Interview?
First of all, I would like to thank GeeksforGeeks! Without their guidance, surely it would have been a tough task for me to clear Infosys… Read More »
Cognizant Off-Campus Drive Experience
Round 1:It was an all India online test, we had to give our online test by sitting in front of a computer having a webcam.I… Read More »
Python | Ways to invert mapping of dictionary
Dictionary is a collection which is unordered, changeable and indexed. In Python, dictionaries are written with curly brackets, and they have keys and values. It… Read More »
DFA for strings not containing consecutive two a’s and starting with ‘a’
Prerequisite – Finite Automata Introduction Problem: Construct deteministic finite automata (DFA) for strings not containing consecutive two a’s and starting with a. Explanation: Accept Strings… Read More »
Find the minimum number of preprocess moves required to make two strings equal
Given two strings A and B of equal lengths consisting of lower case English letters. The task is to count the minimum number of pre-processing… Read More »
Python | Using variable outside and inside the class and method
In Python, we can define the variable outside the class, inside the class and even inside the methods. Let’s see, how to use and access… Read More »
Find the number of distinct pairs of vertices which have a distance of exactly k in a tree
Given an integer k and a tree with n nodes. The task is to count the number of distinct pairs of vertices which have a… Read More »
XOR of a submatrix queries
Given an N * N matrix and q queries, each containing position of top-left and bottom-right corner of a rectangular sub-matrix, the task is to… Read More »
Python | OpenCV program to read and save an Image
OpenCV (Open Source Computer Vision) is a library of programming functions mainly aimed at real-time computer vision. This is cross-platform library, it provides functions that… Read More »
Sum of the natural numbers (up to N) whose modulo with K yield R
Given three integers N, K and R. The task is to calculate the sum of all those numbers from 1 to N which yields remainder… Read More »
Find whether only two parallel lines contain all coordinates points or not
Given an array which represents y coordinates of a set of points on a coordinate plane, where (i, arr[i]) represent a single point. Find whether… Read More »
Python | Remove all sublists outside the given range
Given, list of lists and a range, the task is to traverse each sub-list and remove sublists containing elements falling out of given range. Examples:… Read More »
ArrayList in C#
ArrayList is a powerful feature of C# language. It is the non-generic type of collection which is defined in System.Collections namespace. It is used to… Read More »
Longest sub-sequence of array containing Lucas numbers
Given an array arr[] of N elements, the task is to find the length of the longest sub-sequence in arr[] such that all the elements… Read More »