689. 三个无重叠子数组的最大和 给定数组 nums 由正整数组成,找到三个互不重叠的子数组的最大和. 每个子数组的长度为k,我们要使这3*k个项的和最大化. 返回每个区间起始索引的列表(索引从 0 开始).如果有多个结果,返回字典序最小的一个. 示例: 输入: [1,2,1,2,6,7,5,1], 2 输出: [0, 3, 5] 解释: 子数组 [1, 2], [2, 6], [7, 5] 对应的起始索引为 [0, 3, 5]. 我们也可以取 [2, 1], 但是结果 [1, 3, 5] 在…

In a given array nums of positive integers, find three non-overlapping subarrays with maximum sum. Each subarray will be of size k, and we want to maximize the sum of all 3*k entries. Return the result as a list of indices representing the starting p…

In a given array nums of positive integers, find three non-overlapping subarrays with maximum sum. Each subarray will be of size k, and we want to maximize the sum of all 3*k entries. Return the result as a list of indices representing the starting p…

In a given array nums of positive integers, find three non-overlapping subarrays with maximum sum. Each subarray will be of size k, and we want to maximize the sum of all 3*k entries. Return the result as a list of indices representing the starting p…

In a given array nums of positive integers, find three non-overlapping subarrays with maximum sum. Each subarray will be of size k, and we want to maximize the sum of all 3*k entries. Return the result as a list of indices representing the starting p…

Given an array A of non-negative integers, return the maximum sum of elements in two non-overlapping (contiguous) subarrays, which have lengths L and M.  (For clarification, the L-length subarray could occur before or after the M-length subarray.) Fo…

713. 乘积小于K的子数组 给定一个正整数数组 nums. 找出该数组内乘积小于 k 的连续的子数组的个数. 示例 1: 输入: nums = [10,5,2,6], k = 100 输出: 8 解释: 8个乘积小于100的子数组分别为: [10], [5], [2], [6], [10,5], [5,2], [2,6], [5,2,6]. 需要注意的是 [10,5,2] 并不是乘积小于100的子数组. 说明: 0 < nums.length <= 50000 0 < nums[i]…

560. 和为K的子数组 给定一个整数数组和一个整数 k,你需要找到该数组中和为 k 的连续的子数组的个数. 示例 1 : 输入:nums = [1,1,1], k = 2 输出: 2 , [1,1] 与 [1,1] 为两种不同的情况. 说明 : 数组的长度为 [1, 20,000]. 数组中元素的范围是 [-1000, 1000] ,且整数 k 的范围是 [-1e7, 1e7]. PS: 先附上简单一些的 class Solution { public int subarraySum(int[…

一.题目 HZ偶尔会拿些专业问题来忽悠那些非计算机专业的同学.今天测试组开完会后,他又发话了:在古老的一维模式识别中,常常需要计算连续子向量的最大和,当向量全为正数的时候,问题很好解决.但是,如果向量中包含负数,是否应该包含某个负数,并期望旁边的正数会弥补它呢?例如:{6,-3,-2,7,-15,1,2,2},连续子向量的最大和为8(从第0个开始,到第3个为止).你会不会被他忽悠住?(子向量的长度至少是1) 二.思路 情况一:数组中至少包含一个正数, 这种情况下,将数组元素进行累加,如果累加和出…

Given a circular array C of integers represented by A, find the maximum possible sum of a non-empty subarray of C. Here, a circular array means the end of the array connects to the beginning of the array.  (Formally, C[i] = A[i] when 0 <= i < A.leng…