Leetcode 1589. Maximum Sum Obtained of Any Permutation

Given nums and many inclusive range requests, permute nums to maximize the total sum of all requested subarray sums; the core idea is to compute how often each index is covered (via a difference/prefix technique) and greedily assign largest numbers to indices with highest coverage, returning the result mod 1e9+7.

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Leetcode 1589. Maximum Sum Obtained of Any Permutation

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