https://leetcode.com/problems/subarrays-with-k-different-integers/discuss/523136/JavaC%2B%2BPython-Sliding-Window https://leetcode.com/problems/subarrays-with-k-different-integers/discuss/235235/C%2B%2BJava-with-picture-prefixed-sliding-window LeetCode All in One 题目讲解汇总(持续更新中...)
如果nums 的某个子数组中不同整数的个数恰好为 k,则称 nums 的这个连续、不一定不同的子数组为 「好子数组 」。 例如,[1,2,3,1,2] 中有 3 个不同的整数:1,2,以及 3。 子数组 是数组的 连续 部分。 来源:力扣(LeetCode) 链接:https://leetcode.cn/problems/subarrays-with-k-different-integers ...
若能分别求出最多有K个奇数的子数组的个数,和最多有 K-1 个奇数的子数组的个数,二者相减,就是正好有K个奇数的子数组的个数。 我们之前做过这样一道题目 Subarrays with K Different Integers,这里采用几乎完全一样的思路。由于要同时求K和 K-1 的情况,所以可以用个子函数来做。在 atMost...
输入:nums = [1,2,1,2,3], k = 2 输出:7 解释:恰好由 2 个不同整数组成的子数组:[1,2], [2,1], [1,2], [2,3], [1,2,1], [2,1,2], [1,2,1,2]. 示例2: 输入:nums = [1,2,1,3,4], k = 3 输出:3 解释:恰好由 3 个不同整数组成的子数组:[1,2,1,3], [2,...
package leetcode import "math" func maxSubarraySumCircular(nums []int) int { var max1, max2, sum int // case: no circulation max1 = int(math.Inf(-1)) l := len(nums) for i := 0; i < l; i++ { sum += nums[i] if sum > max1 { max1 = sum } if sum < 1 { sum ...
leetcode 560. Subarray Sum Equals K technically, no different with two sum...[leetcode] 560. Subarray Sum Equals K Description 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: Output: ...
992 Subarrays with K Different Integers K 个不同整数的子数组 Description: Given an integer array nums and an integer k, return the number of good subarrays of nums. A good array is an array where the number of different integers in that array is exactly k. ...
package leetcode // 解法一 最快的解是 DP + 单调栈 func sumSubarrayMins(A []int) int { stack, dp, res, mod := []int{}, make([]int, len(A)+1), 0, 1000000007 stack = append(stack, -1) for i := 0; i < len(A); i++ { for stack[len(stack)-1] != -1 && A[i]...
题目链接:https://leetcode.com/problems/subarrays-with-k-different-integers/题意:已知一个全为正数的数组A,1<=A.length<=20000,1<=A[i]<=A.length,1<=K<=A.length,问A中恰好有K个不同的元素的子数组个数有多少个思路:对于考虑到数据范围较大,暴力显然不可取。对于每个位置i,如果用min_k[i] ...
1,2,3,1,2] has 3 different integers: 1, 2, and 3.) Return the number of good subarrays of A. Example: Input:A = [1,2,1,2,3], K =2Output:7Explanation:Subarrays formedwithexactly2different integers: [1,2], [2,1], [1,2], [2,3], [1,2,1], [2,1,2], [1,2,...