ProDeveloperTutorialonAugust 31, 2026 Prefix sum problems: Given an array and value k, return the count of subarray with sum k Problem Statement: You are given a array with sum k. You need to find the number of subarrays with sum k. Example: Input: arr = [1, 2,…
ProDeveloperTutorialonAugust 31, 2026 Prefix sum problems: Longest subarray with sum k Problem Statement: You are given an array, and a value K, find the length of the longest subarray. Example: Input: arr = [1, 2, 3, 4], k = 4…
ProDeveloperTutorialonAugust 31, 2026 Prefix sum problems: Find the largest subarray with sum 0 Problem Statement: You are given an array with +ve and -ve integers, find the length of the longest subarray with sum 0. Example: Input: arr[]…
ProDeveloperTutorialonAugust 31, 2026 Prefix sum problems: Get original array from Prefix sum array Problem Statement: You are given a prefix sum array. You need to find the original array. Example: Input: [1, 3, 6, 10] Output: [1, 2,…
ProDeveloperTutorialonAugust 31, 2026 Prefix sum problems: Maximum equilibrium sum in an array Problem Statement: Given an array, you need to find the maximum value of prefix sum which is also suffix sum for index i in arr[] Example:…
ProDeveloperTutorialonAugust 31, 2026 Prefix sum problems: Bitwise OR of sum of all subsequence of the array Problem Statement: You are given an array, you need to find the bitwise or of sum of all the sub sequence of the array. Example: Input: arr []…
ProDeveloperTutorialonAugust 31, 2026 Prefix sum problems: Given an array find Equilibrium Index Problem Statement: You are given an array, you need to find Equilibrium Index. Equilibrium Index meaning, an index such that the sum of all…
ProDeveloperTutorialonAugust 31, 2026 Merge interval pattern: Make Intervals Non Overlapping Problem Statement: You are given intervals [start, end], return the minimum number of intervals that you need to remove to make the rest of…
ProDeveloperTutorialonAugust 31, 2026 Merge interval pattern: Check if person can attend all the meetings Problem Statement: You are given an array where in arr[s][e], will represent the start and end time of the meeting. You need to check if it is…
ProDeveloperTutorialonAugust 31, 2026 Merge interval pattern: Check if two intervals overlap Problem Statement: You are given an array, you need to check if any two intervals overlap Example: Input: arr [] = [[1, 7], [2, 8], [3, 6]]…