 ## Find two non-overlapping pairs having the same sum in an array

Problem Given an unsorted array of integers. The task is to find any two non-overlapping pairs w… ## Find a pair with a minimum absolute difference in an array

Problem Given an unsorted array, find the minimum difference between any pair in a given array a… ## Find the minimum index of a repeating element in an array

Problem Given an array of integers, find the first repeating element in it. We need to find the … ## Find triplet having maximum product in an array

Problem Find 3 numbers from the array such that their product is maximum. Sample Input [… ## Mountain Array

Problem Given an array of integers, check if it is a mountain array or not. An array is called a… ## Difference Between ArrayList and LinkedList

The list is an abstract data type available in functional programming languages that stores ordered… ## Count the number of strictly increasing subarrays in an array

Problem Given an array, count the total number of strictly increasing subarrays in it. Sample… ## Shuffle an array according to the given order of elements

Problem Given two integer arrays of the same size, arr[] and index[], reorder elements in arr[] … ## Find minimum sum of a subarray of size k

Problem Given an array of integers and a number k, find the minimum sum of a subarray of size k.… ## Subarray with Sum k

Problem Given an unsorted array arr of size N, find a contiguous subarray that adds to a given n… ## Maximum Sum Circular Subarray

Problem Given a circular integer array nums of length n, return the maximum possible sum of a no… ## Find Maximum Subarray Sum

Problem The objective is to find the elements of a continuous subarray nums of integers that hav…