All Medium Articles

Given a N x N matrix where value at cell (i, j) is the cost of moving from a cell (i, j) to cell (i… Read More

Sudo Placement

DSA

Dynamic Programming

Matrix

Print all the combinations of N elements by changing sign such that their sum is divisible by M

Given an array of N integers and an integer M. You can change the sign(positive or negative) of any element in the array. The task… Read More

Arrays

DSA

Java

Java Programs

Microsoft Interview Experience (On campus internship)

It was conducted on Cocubes. It consisted of 3 questions: 2 marks:Average of ascii characters of string. Input:abc Output:(65+66+67)/3=66 3 marks:Reverse k nodes at a… Read More

Experiences

Interview Experiences

TCS Placement Paper | E-mail Writing

During the on-campus recruitment process, TCS conducts an E-Mail writing test of 10 minutes duration and is included in the other writing tests. This round… Read More

Interview Tips

interview-preparation

placement preparation

TCS

Placements

TCS Placement Paper | Email Writing Question 5

Pre-requisite: Procedure to E-mail Writing This is a TCS model placement email-writing question. It covers the important directions along with a sample solution to the… Read More

interview-preparation

placement preparation

TCS

Placements

TCS Placement Paper | Email Writing Question 4

Pre-requisite: Procedure to E-mail Writing This is a TCS model placement email-writing question. It covers the important directions along with a sample solution to the… Read More

interview-preparation

placement preparation

TCS

Placements

TCS Placement Paper | Email Writing Question 2

Pre-requisite: Procedure to E-mail Writing This is a TCS model placement email-writing question. It covers the important directions along with a sample solution to the… Read More

interview-preparation

placement preparation

TCS

Placements

DE Shaw Internship Experience (On campus)

Online Round: First round consisted of one coding question: There is an array of pile of chocolates, in every iteration Ayushi chose pile with maximum… Read More

Experiences

Interview Experiences

Amazon Interview Experience

Round: I An Array arr={7, 7, 8, 8, 9, 1, 1, 4, 2, 2} has numbers appearing twice or once. Duplicates appear side by side… Read More

Misc

Codenation Interview Experience (On Campus for Internship)

CodeNation visited our Campus for Hiring Summer Interns. The process was as follows: 1) Online Coding Round 3 questions based on Data Structures and Algorithms,… Read More

Experiences

Interview Experiences

Ruby | Ranges

Prerequisite: Ruby Range Operator Ruby ranges depict a set of values with a beginning and an end. Values of a range can be numbers, characters,… Read More

Ruby-Basics

Ruby

Info Edge Interview Experience | (On-Campus)

Round 1: It was a written test which consisted of three sections-aptitude, technical(multiple choice questions) which included mainly data structures, sorting, searching, time complexities, programming-it… Read More

Experiences

Interview Experiences

Egg Dropping Puzzle with 2 Eggs and K Floors

Given 2 eggs and k floors, find the minimum number of trials needed in worst case. This problem is a specific case of n eggs… Read More

DSA

Goldman Sachs-Internship Interview Experience(On Campus)

Our college was recently visited by Goldman Sachs. The internship process started with a technical round hosted on hackerrank consisting of 8 MCQ’s of 10… Read More

Experiences

Internship

Interview Experiences

Edit distance and LCS (Longest Common Subsequence)

In standard Edit Distance where we are allowed 3 operations, insert, delete, and replace. Consider a variation of edit distance where we are allowed only… Read More

DSA

Strings

Flipkart On-Campus Recruitment

Round 1: It was a online coding round on Hackerrank, there were three questions : 1. balancing bracket problem in which you have to check… Read More

Experiences

Interview Experiences

JP Morgan Chase & Co. (JPMC) Interview Experience | Set 7 (On campus for internship)

Round 1: Two programming questions, one of 40 marks and the other of 60 marks on Hackerrank- Given n sentences and q queries, for… Read More

Experiences

Interview Experiences

Longest Common Subsequence | DP using Memoization

Given two strings s1 and s2, the task is to find the length of the longest common subsequence present in both of them. Examples: Input:… Read More

LCS

Memoization

DSA

Dynamic Programming

Strings

Proof that vertex cover is NP complete

Prerequisite – Vertex Cover Problem, NP-Completeness Problem – Given a graph G(V, E) and a positive integer k, the problem is to find whether there… Read More

Advanced Data Structure

DSA

Graph

Detect cycle in an undirected graph using BFS

Given an undirected graph, how to check if there is a cycle in the graph? For example, the following graph has a cycle of 1-0-2-1. … Read More

BFS

Advanced Data Structure

DSA

Graph