class Solution: def maximumSubarraySum(self, nums: List[int], k: int) -> int: # ans 维护所有长度为 k 且数字各不相同的子数组中,子数组和的最大值 ans: int = 0 # sum 维护当前滑动窗口 [l, r] 内的数字和 sum: int = 0 # num_to_cnt 表示滑动窗口 [l, r] 内每个数字的出现次数 nu...
You are given an array of positive integers nums and want to erase a subarray containing unique elements. The score you get by erasing the subarray is equal to the sum of its elements. Return the maximum score you can get by erasing exactly one subarray. An array b is called to be a ...
Given therootof a binary tree, the level of its root is1, the level of its children is2, and so on. Return the smallest levelXsuch that the sum of all the values of nodes at levelXis maximal. Example 1: Input:[1,7,0,7,-8,null,null] Output:2 Explanation: Level 1 sum = 1. ...
1043 Partition Array for Maximum Sum 分隔数组以得到最大和 Description: Given an integer array arr, partition the array into (contiguous) subarrays of length at most k. After partitioning, each subarray has their values changed to become the maximum value of that subarray. Return the largest su...
classSolution{publiclongmaxMatrixSum(int[][]matrix){long sum=0;int counter=0;int min=Integer.MAX_VALUE;int n=matrix.length;for(int i=0;i<n;i++){for(int j=0;j<matrix[0].length;j++){if(matrix[i][j]<0)counter++;matrix[i][j]=Math.abs(matrix[i][j]);if(matrix[i][j]<min...
LeetCode 53. Maximum Subarray Sum最大子数组和(Easy) 给定一个整数数组 nums ,找到一个具有最大和的连续子数组(子数组最少包含一个元素),返回其最大和。 示例: 输入: [-2,1,-3,4,-1,2,1,-5,4], 输出: 6 解释: 连续子数组 [4,-1,2,1] 的和最大,为 6。
Explanation: Because we can choose [1, -2, 0, 3] and drop -2, thus the subarray [1, 0, 3] becomes the maximum value. Example 2: Input: arr = [1,-2,-2,3] Output: 3 Explanation: We just choose [3] and it's the maximum sum. ...
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. ...
[leetcode] 1043. Partition Array for Maximum Sum Description Given an integer array arr, you should partition the array into (contiguous) subarrays of length at most k. After partitioning, each subarray has their values changed to become the maximum value of that subarray....
LeetCode 325. Maximum Size Subarray Sum Equals k 若谷 追求卓越,成功就会在不经意间追上你题目: Given an array nums and a target value k, find the maximum length of a subarray that sums to k. If there isn't one, return 0 instead. Note:The sum of the entire nums array is guaranteed ...