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Solution: K Maximum Sum Combinations From Two Arrays

Explore how to identify the top k maximum sum combinations formed by adding elements from two integer arrays. This lesson teaches you to apply a max heap strategy combined with sorting to efficiently compute the results without generating all pairs. You will understand the process of managing indices, preventing duplicates, and optimizing time and space complexity to handle constraints effectively.

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 ...