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All Hard Articles
Given an integer N, the task is to find the minimum count of {1, 2, 5}-valued coins such that changes of all possible values in… Read More
An abstract class is a class declared with an abstract keyword. Properties of an abstract class: An abstract can have an abstract and non-abstract method.… Read More
Given an array arr[] consisting of N integers and an integer K, the task is to count the number of subsequences of the given array… Read More
In Java, a Pagoda is a priority queue enforced with a modification of a binary tree. The binary tree is constrained to have priority queue… Read More
Given an integer N(N > 1), the task is to arrange all integers from the range [1, N] in an array such that none of… Read More
I applied for the role of SDE I through Amazon WOW drive 2020. There were a total of 5 rounds (1 coding test + 4… Read More
Given a Binary Tree and an integer target, denoting the value of a node, the task is to find the sum of distances of all… Read More
In this article, we will learn how to draw lines using the keyboard (arrow keys) in the turtle graphics. Let’s first discuss some methods used… Read More
In this article, we will learn how to draw lines at any position which is clicked by the mouse using a turtle module. Turtle graphics: … Read More
In this article, we will be explaining the steps and various logic required in making of the famous Pig Game, which is a virtual dice… Read More
React Developer Tools: React Developer Tools is a Chrome DevTools extension for the React JavaScript library. A very useful tool, if you are working on… Read More
In this article, we are going to learn how to draw the shape of a Diamond using turtle graphics in Python. Turtle graphics: forward(length): moves… Read More
In order to learn about Backpropagation, we first have to understand the architecture of the neural network and then the learning process in ANN. So,… Read More
Given an array A[] of size N(1 ≤ N ≤ 105), consisting of positive integers, where the score of an index i in range [0,… Read More
What is PCA? The main guiding principle for Principal Component Analysis is FEATURE EXTRACTION i.e. “Features of a data set should be less as well… Read More
Cryptography is a technique of securing information and communications through the use of codes so that only those people for whom the information is intended… Read More
Online Assessment Test: The round consisted of four sections. Debugging (time constraint): There were 7 questions to be debugged. Coding Section (time constraint): There were… Read More
Resume Shortlisting: This round was very integral as many people were rejected in this round because their profile didn’t resonate with what the company was… Read More
Reversing a list means after reversing the list, the first element should be swapped with the last element, the second element should be swapped with… Read More
Given two integers r1 and r2, representing the radius of two circles, the task is to find the radius of the circle having area equal… Read More