Data Analytics Interview Questions and Answers for Freshers

Q1. Ways To Make Coin Change

Given an infinite supply of coins of varying denominations, determine the total number of ways to make change for a specified value using these coins. If it's not possible to make the c...read more

Q2. Pair Sum Problem Statement

You are given an integer array 'ARR' of size 'N' and an integer 'S'. Your task is to find and return a list of all pairs of elements where each sum of a pair equals 'S'.

Note:

Each pa...read more

Q3. Lexicographically Smallest Array Problem Statement

You are given an array ARR of 'N' integers and a positive integer 'K'.

Your task is to determine the lexicographically smallest array that can be obtained by p...read more

Q4. Longest Common Prefix Problem Statement

You are given an array ‘ARR’ consisting of ‘N’ strings. Your task is to find the longest common prefix among all these strings. If there is no common prefix, you have to ...read more

Q6. K-th Largest Number in a BST

Given a binary search tree (BST) consisting of integers and containing 'N' nodes, your task is to find and return the K-th largest element in this BST.

If there is no K-th largest e...read more

Q8. Peak Element Finder

For a given array of integers arr, identify the peak element. A peak element is an element that is greater than its neighboring elements. Specifically, if arr[i] is the peak, then both arr[i...read more