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4sum -Complete Tutorial

Last Updated: 23 July 2025

The 4Sum problem is an extension of the well-known 2-Sum and 3-Sum problems, where the goal is to find four numbers in an array that sum up to a given target. It’s a commo...read more

4 Sum - Count quadruplets with given sum in an array

Last Updated: 23 July 2025

Given an array arr[] and a target value, the task is to find the count of quadruplets present in the given array having sum equal to the given target.Examples:Input: arr[]...read more

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Count of quadruplets with given sum from 4 arrays | Set 2

Last Updated: 23 September 2024

Given four arrays containing integer elements and an integer sum, the task is to count the quadruplets such that each element is chosen from a different array and the sum ...read more

Count of quadruplets with given Sum from 4 Arrays

Last Updated: 23 September 2024

Given four arrays containing integer elements and an integer sum, the task is to count the quadruplets such that each element is chosen from a different array and the sum ...read more

school-programming