All Hard Articles

Informatica Interview Experience | On-Campus Internship

Informatica recently visited our campus around the First week of March 2020, for selecting SDE interns from Btech. 2021 Batch. The selection process took around… Read More

Informatica

Marketing

On-Campus

Experiences

Internship

Interview Experiences

Amazon Interview Experience | SDE (1.5 Year Experienced)

Round 1 – Online Coding Round on Amcat Platform: 1) Top N competitors similar to this https://leetcode.com/discuss/interview-question/460127/ 2) A very similar question to this, the… Read More

Amazon

Marketing

Experienced

Experiences

Interview Experiences

Google Cloud Database Services

Storage is the first-factor we choose while designing an application. Every application needs a reliable storage structure for the proper function of the software. The… Read More

Cloud-Computing

Computer Networks

Pair of integers having difference of their fifth power as X

Given an integer X, the task is to find a pair A and B such that their difference of fifth power is X, i.e., A5… Read More

Maths

maths-power

DSA

Mathematical

Sum of GCD of all numbers upto N with N itself

Given an integer N, the task is to find the sum of Greatest Common Divisors of all numbers up to N with N itself.Examples: Input:… Read More

euler-totient

GCD-LCM

number-theory

DSA

Mathematical

OpenCV – The Gunnar-Farneback optical flow

In this article, we will know about Dense Optical Flow by Gunnar FarneBack technique, it was published in a research paper named ‘Two-Frame Motion Estimation… Read More

Image-Processing

OpenCV

Picked

Python-OpenCV

Python

Responsibilities and Design issues of MAC Protocol

Ad hoc wireless networks are included portable nodes that trade packets by sharing a typical communicate radio channel. Because of the constraints of this channel,… Read More

Computer Networks

Python MongoDB – insert_one Query

MongoDB is a cross-platform document-oriented and a non relational (i.e NoSQL) database program. It is an open-source document database, that stores the data in the… Read More

Python-mongoDB

Python

Maximum weighted edge in path between two nodes in an N-ary tree using binary lifting

Given an N-ary tree with weighted edge and Q queries where each query contains two nodes of the tree. The task is to find the… Read More

array-range-queries

DFS

n-ary-tree

Algorithms

Bit Magic

Competitive Programming

DSA

Dynamic Programming

Tree

Split a binary string into K subsets minimizing sum of products of occurrences of 0 and 1

Given a binary string S, the task is to partition the sequence into K non-empty subsets such that the sum of products of occurrences of… Read More

binary-string

subset

Algorithms

Bit Magic

Competitive Programming

DSA

Dynamic Programming

Strings

Implementation of Artificial Neural Network for AND Logic Gate with 2-bit Binary Input

Artificial Neural Network (ANN) is a computational model based on the biological neural networks of animal brains. ANN is modeled with three types of layers:… Read More

Neural Network

python

Machine Learning

Find N fractions that sum upto a given fraction N/D

Given a fraction N/D, the task is to split this fraction into N parts such that their sum is equal to the fraction N/D, i.e., Note:… Read More

Fraction

DSA

Greedy

Mathematical

School Programming

Generating RGBA portable graphic images through C++

PNG images are capable of supporting multiple image properties such as multiple colors, degree of transparency, Gamma correction, Lossless compression, etc. PNG images are widely… Read More

computer-graphics

C Language

C++

C++ Programs

Project

Write From Home

Nth term where K+1th term is product of Kth term with difference of max and min digit of Kth term

Given two integers N and D, the task is to find the value of F(N) where the value of F(1) is D, where F(K) is… Read More

number-digits

DSA

Mathematical

Misc

Difference between RSA algorithm and DSA

1. Rivest-Shamir-Adleman (RSA) algorithm : RSA stands for Rivest-Shamir-Adleman. It is a cryptosystem used for secure data transmission. In RSA algorithm, encryption key is public… Read More

Cyber-security

Information-Security

Computer Networks

Difference Between

GATE CS

Hashed Page Tables in Operating System

There are several common techniques for structuring page tables like Hierarchical Paging, Hashed Page Tables, and Inverted Page Tables. In this article, we will discuss… Read More

Operating Systems

Convert undirected connected graph to strongly connected directed graph

Given an undirected graph of N vertices and M edges, the task is to assign directions to the given M Edges such that the graph… Read More

Algorithms

DSA

Dynamic Programming

Graph

Recursion

VHDL code for AND and OR Logic Gates

Prerequisite – Introduction of Logic Gates Design and implement the AND and OR logic gates using VHDL (VHSIC Hardware Description Language) programming language. Different Types… Read More

Digital Logic

Minimum length of substring whose rotation generates a palindromic substring

Given a string str, the task is to find the minimum length of substring required to rotate that generates a palindromic substring from the given… Read More

palindrome

substring

Competitive Programming

DSA

Hash

Strings

Length of the longest ZigZag subarray of the given array

Given an array arr[] containing n numbers, the task is to find the length of the longest ZigZag subarray such that every element in the… Read More

subarray

Arrays

DSA

Mathematical

Searching

Sorting