All Hard Articles
Length of longest common prime subsequence from two given arrays
Given two arrays arr1[] and arr2[] of length N and M respectively, the task is to find the length of the longest common prime subsequence… Read More
LCS
Prime Number
subsequence
DSA
Dynamic Programming
Recursion
Searching
Check if a palindromic matrix can be formed from the given array elements
Given an array arr[] consisting of N2 integers, the task is to check whether a matrix of dimensions N * N can be formed from… Read More
Algorithms
C++ Programs
Competitive Programming
DSA
Count ways to split a Binary String into three substrings having equal count of zeros
Given binary string str, the task is to count the total number of ways to split the given string into three non-overlapping substrings having the… Read More
binary-string
frequency-counting
substring
DSA
Hash
Mathematical
Searching
Strings
Goldman Sachs Interview Experience for Summer Internship 2021
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Goldman Sachs
Marketing
Experiences
Internship
Interview Experiences
SAP Labs Interview Experience | 2021 On-Campus
SAP Labs visited our campus for Full-Time Employment for the role of Associate Developer. Here comes my interview experience. But first, I want to thank… Read More
Marketing
On-Campus
SAP Labs
Experiences
Interview Experiences
DE Shaw Interview Experience On-Campus 2021
D. E. Shaw visited our campus (VJTI, Mumbai) in the last week of August 2020 for a two-month software development internship for the year 2021.… Read More
D-E-Shaw
DE Shaw
Marketing
On-Campus
Experiences
Interview Experiences
How to Execute Character Count Program in MapReduce Hadoop?
Prerequisites: Hadoop and MapReduce Required setup for completing the below task. Java Installation Hadoop installation  Our task is to count the frequency of each character… Read More
MapReduce
Hadoop
SalesForce Interview Experience for On-Campus Internship 2021
Salesforce visited our campus (MNIT Jaipur) in the first week of September 2020 offering a 2 months summer internship which will take place in May… Read More
Marketing
On-Campus
Salesforce
Experiences
Internship
Interview Experiences
Morgan Stanley Interview Experience for Internship | On Campus (Virtual) August 2020
There were 3 Rounds. The First Round was the Online Coding Challenge followed by 2 Online Virtual Interviews over Zoom Call where we had to… Read More
Marketing
Morgan Stanley
On-Campus
Experiences
Internship
Interview Experiences
How to Convert CSV to JSON file having Comma Separated values in Node.js ?
A CSV is a comma-separated value file with a .csv extension, which allows data to be saved in a tabular format. Here is an article… Read More
CSV
JSON
Node.js-Misc
JavaScript
Node.js
Web Technologies
Working with JSON Data in Java
JSON stands for JavaScript Object Notation which is a lightweight text-based open standard designed which is easy for human-readable data interchange. In general, JSON is… Read More
JSON
Java
How to make a vertical wavy text line using HTML and CSS ?
In this article, a wavy animated text is implemented using HTML and CSS. It is one of the simplest CSS effects. For a beginner, it… Read More
Web Technologies
Web Templates
Check if a path exists for a cell valued 1 to reach the bottom right corner of a Matrix before any cell valued 2
Given a matrix arr[][] of dimensions N * M, having elements 0, 1, and 2. There is only one cell with value 1 present in… Read More
BFS
cpp-deque
Graph Traversals
DSA
Graph
Matrix
Queue
Searching
Check if K can be obtained by performing arithmetic operations on any permutation of an Array
Given an array arr[] of N integers and an integer K, the task is to check if the expression formed for any permutation of the… Read More
expression-evaluation
Permutation and Combination
Arrays
Backtracking
DSA
Mathematical
Recursion
Count straight lines intersecting at a given point
Given a matrix lines[][] of size N * 3, such that ith row denotes a line having the equation lines[i][0] * x + lines[i][1]*y =… Read More
Geometric-Lines
DSA
Geometric
Mathematical
Matrix
Modify given array by incrementing first occurrence of every element by K
Given an array arr[] consisting of N integers, read every element of the array one by one and perform the following operations: If the current… Read More
cpp-map
cpp-set
frequency-counting
Arrays
DSA
Hash
Searching
Check if a destination is reachable from source with two movements allowed | Set 2
Given a pair of coordinates (X1, Y1)(source) and (X2, Y2)(destination), the task is to check if it is possible to reach the destination form the… Read More
interview-preparation
MakeMyTrip
Modular Arithmetic
DSA
Greedy
Mathematical
How to Create a COVID-19 Tracker Android App to See Details of any City and State in India?
In the previous article, we have discussed How to create a COVID-19 Tracker Android App which shows only the Global Stats. In this article, we… Read More
android
Android
Java
Mann Whitney U Test in R Programming
A popular nonparametric(distribution-free) test to compare outcomes between two independent groups is the Mann Whitney U test. When comparing two independent samples, when the outcome… Read More
R Data-science
R Machine-Learning
R Language
Smallest element from all square submatrices of size K from a given Matrix
Given a matrix arr[][] and an integer K, the task is to find the smallest element from all possible square submatrices of size K from… Read More
Google
interview-preparation
DSA
Greedy
Mathematical
Matrix
Searching
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