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Solution: K Maximum Sum Combinations From Two Arrays

Explore how to efficiently find the k largest sums formed by adding elements from two integer arrays. Understand using max heaps, sorting, and index tracking to avoid duplicates. Learn to implement this approach with a focus on optimizing time and space complexity for scalable problem solving.

Statement

You are given two integer arrays, arr1 and arr2, each of size nn. You are also given an integer k. Your task is to return the k largest sum combinations that can be formed by adding one element from arr1 and one element from arr2, for all possible pairs (arr1[i] + arr2[j]), where 0i,j<n0 ≤ i, j < n.

Note: The output should be sorted in non-increasing order.

Constraints:

  • 1n10001 ≤ n ≤ 1000 ...