# DATA STRUCTURE

## Find the Difference (Beautiful Arrangement) Problem Solution

Problem Given two strings, ‘s’ and  ‘t’ have all the characters the…

## 10 Best Data Structure and Algorithm Courses Online You Should Opt In

DSA is a core concept in programming. It stands for data structures and algorithms. Any programming…

## Rearrange an array such that it contains alternate positive and negative numbers

Problem You are given an array. Rearrange the elements such that positive and negative integers …

## Efficiently calculate the frequency of all elements present in a limited range array

Problem Given an array of the sizes n where elements range from 0 to n-1. Calculate the fre…

## Job Sequencing Problem

Problem Given a set of jobs, each with its own deadline and corresponding profit. You get profit…

## Activity Selection Problem

Problem Given pairs of integers denoting starting and ending time of each task. Find the maximum…

## Find the index that divides an array into two non-empty subarrays with equal sum

Problem Given an integer array, find an index that divides it into two non-empty subarrays havin…

## Find subarrays with a given sum in an array

Problem Given an unsorted array of nonnegative integers, find a continuous subarray which adds t…

## Count distinct absolute values in a sorted array

Problem Given a sorted array of integers, return the number of distinct absolute values among th…

## Print Matrix in Spiral Form

Problem Given an integer matrix, print it in spiral form Sample Input [1 2 3 4] [4 5 6 …

## Find the sorted triplet in an array

Problem Given an integer array arr, find a sorted triplet such that arr[i] < arr[j] < arr[…

## Shift all matrix elements by 1 in spiral order

Problem Given an M x N matrix, shift all its elements by 1 in spiral order Sample Input …