Codenation

31 posts

Last Updated: 23 July 2025

Given a string s, return the length of the longest good palindromic subsequence in s such that:It has an even length.No two consecutive characters are equal, except the tw...read more

Codenation / Trilogy Innovations Test Experience April 2022 Online

Last Updated: 10 June 2024

Problem 1Dr. Betra has become bored with his research on human hair. So he decided to breed pigeons.He bought N pigeons from the shop. The shopkeeper advised him to make s...read more

Interview Experiences

Codenation

Experiences

C++ Program for Reversal algorithm for array rotation

Last Updated: 23 July 2025

Write a function rotate(arr[], d, n) that rotates arr[] of size n by d elements.Example :Input : arr[] = [1, 2, 3, 4, 5, 6, 7] d = 2Output : arr[] = [3, 4, 5, 6, ...read more

C++

Codenation

rotation

C# Program for Reversal algorithm for array rotation

Last Updated: 23 July 2025

Write a function rotate(arr[], d, n) that rotates arr[] of size n by d elements.Example :Input : arr[] = [1, 2, 3, 4, 5, 6, 7] d = 2Output : arr[] = [3, 4, 5, 6, ...read more

Codenation

rotation

PHP Program for Reversal algorithm for array rotation

Last Updated: 23 July 2025

Write a function rotate(arr[], d, n) that rotates arr[] of size n by d elements. Example : Input : arr[] = [1, 2, 3, 4, 5, 6, 7] d = 2Output : arr[] = [3, 4,...read more

PHP

Codenation

rotation

Javascript Program for Reversal algorithm for array rotation

Last Updated: 23 July 2025

Write a function rotate(arr[], d, n) that rotates arr[] of size n by d elements.Example :Input : arr[] = [1, 2, 3, 4, 5, 6, 7] d = 2Output : arr[] = [3, 4, 5, 6, ...read more

JavaScript

Codenation

rotation

Minimize swaps to rearrange Array such that remainder of any element and its index with 3 are same

Last Updated: 23 July 2025

Given an array arr[]. The task is to minimize the number of swaps required such that for each i in arr[], arr[i]%3 = i%3. If such rearrangement is not possible, print -1.E...read more

CodeNation Interview Experience

Last Updated: 13 November 2020

I was included in the CodeNation discussion list with CodeAgon - their editing competition. My position was among the top 200 and I did not really expect to be selected.Th...read more

Interview Experiences

Codenation

Experiences

Count minimum number of fountains to be activated to cover the entire garden

Last Updated: 23 July 2025

There is a one-dimensional garden of length N. In each position of the N length garden, a fountain has been installed. Given an array a[]such that a[i] describes the cover...read more

DSA

Morgan Stanley

Codenation

interview-preparation

two-pointer-algorithm

Gameskraft Technologies

Codenation Interview Experience | Online Test

Last Updated: 28 September 2020

Recently, on-campus drive was held for Codenation for Software Development Engineer Intern.The process was:1. Online Test2. Telephonic Interview3. Skype InterviewOnline te...read more

Interview Experiences

Codenation

Marketing

Experiences

Codenation Interview Experience for SDE-1 (On-Campus)

Last Updated: 03 September 2020

Codenation visited on my campus in August.Round 1 (Written round): First-round was a written round that took place on hackerrank. We need to solve 3 problems in 90 minutes...read more

Interview Experiences

Represent a number as the sum of positive numbers ending with 9

Last Updated: 15 July 2025

Given an integer N, the task is to check if N can be expressed as a sum of integers having 9 as the last digit (9, 19, 29, 39...), or not. If found to be true, then find t...read more

DSA

Codenation

number-digits

Codenation Interview Experience | DS-Algo Round

Last Updated: 14 January 2022

Q1: How many sets are possible from an array of size n, such that each number in the set divides the consecutive number in the set. You can use one value only once in a pa...read more

Interview Experiences

Codenation

Experiences

Codenation Interview Experience | On campus for Internship

Last Updated: 10 August 2020

I applied for two month long summer(2021) internship at codenation. It was an On-campus internship recruitment (Tier - 2 college).There were 4 rounds including the online ...read more

Interview Experiences

Organizing Tournament Problem

Last Updated: 15 July 2025

Given a positive integer N representing the count of players playing the game. The game is played between two teams such that each team consists of at least one player but...read more

DSA

Codenation

interview-preparation

Greedy Algorithms

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