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Solution: K Maximum Sum Combinations From Two Arrays

Explore how to identify the top k largest sum combinations from two integer arrays by applying the top K elements pattern with a max heap approach. Understand sorting, heap operations, and index tracking to efficiently extract the results without computing all pairs.

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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 0≤i,j<n0 ≤ i, j < n.

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

Constraints:

  • 1≤n≤10001 ≤ n ≤ 1000 ...