5]),左右区间合并在一起可以组成的subarray的个数是len([3])*len([4,5]),再加上2本身自己组成一个独立的subarray [2],其总数就是 len([3]) + len([4,5]) + len([3])*len([4,5]) + 1,转成
Given an array of integers arr, find the sum ofmin(b), wherebranges over every (contiguous) subarray ofarr. Since the answer may be large, return the answer modulo109 + 7. Example 1: Input:arr = [3,1,2,4]Output:17Explanation:Subarrays are [3], [1], [2], [4], [3,1], [...
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https://leetcode.com/problems/maximum-sum-of-3-non-overlapping-subarrays/ 题目: In a given arraynumsof positive integers, find three non-overlapping subarrays with maximum sum. Each subarray will be of sizek, and we want to maximize the sum of all3*kentries. Return the result as a lis...
https://leetcode.com/problems/range-sum-of-sorted-subarray-sums/discuss/733047/Python-Binary-Search-Time-O(NlogSum(A)) class Solution: def rangeSum(self, A, n, left, right): B, C = [0] * (n + 1), [0] * (n + 1)
Return the maximum number of non-empty non-overlapping subarrays such that the sum of values in each subarray is equal to target. Example 1: Input: nums = [1,1,1,1,1], target = 2 Output: 2 Explanation: There are 2 non-overlapping subarrays [1,1,1,1,1] with sum equals to targ...
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[LeetCode] 560. Subarray Sum Equals K Problem Given an array of integers and an integer k, you need to find the total number of continuous subarrays whose sum equals to k. Example 1: Input:nums = [1,1,1], k = 2 Output: 2
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LeetCode 689. Maximum Sum of 3 Non-Overlapping Subarrays 2019-12-09 12:51 −原题链接在这里:https://leetcode.com/problems/maximum-sum-of-3-non-overlapping-subarrays/ 题目: In a given array nums of positive integers, find three ... ...