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当前标签:PrefixSum [CodeForces] The Number Of Good Substrings Review->Improve 2022-01-17 13:44阅读:56评论:0推荐:0 [LeetCode 1712] Ways to Split Array Into Three Subarrays Review->Improve 2021-01-13 05:21阅读:494评论:0推荐:0 [LeetCode 1674] Minimum Moves to Make Array Complementary...
classSolution:defsubarraySum(self, nums: List[int], target: int) ->int: n, count=len(nums), 0foriinrange(n):forjinrange(i, n): curSum= sum(nums[i: j + 1])ifcurSum ==target: count+= 1returncount 2. 参考Prefix Sum & Dictionary Time and Space O(n) for -- Find a number ...
intleetcodeprefix数组优化 叶茂林2024-01-18 给你一个整数数组 nums 和一个整数 k ,请你统计并返回 该数组中和为 k 的子数组的个数 。 15710 热门专栏 函数式编程语言及工具 283 文章67 订阅 idba 334 文章48 订阅 字根中文校对软件 188 文章44 订阅 ...
prefixSum[1] = prefixSum[0] + arr[1] = 30, prefixSum[2] = prefixSum[1] + arr[2] = 40 and so on. 其python实现为: # prefix sum array的实现 def fillPrefixSum(arr,n,prefixSum): prefixSum[0] = arr[0] for i in range(1,n): prefixSum[i] = prefixSum[i-1] + arr[i] ...
0450-delete-node-in-a-bst.rs 0456-132-pattern.rs 0472-concatenated-words.rs 0496-next-greater-element-I.rs 0496-next-greater-element-i.rs 0518-coin-change-ii.rs 0523-continuous-subarray-sum.rs 0535-encode-and-decode-tinyURL.rs 0535-encode-and-decode-tinyurl.rs 0543-diameter-of-binary-tree...
https://leetcode-cn.com/problems/longest-common-prefix 示例1: 输入:strs = ["flower","flow","flight"] 输出:"fl" 示例2: 输入:strs = ["dog","racecar","car"] 输出:"" 解释:输入不存在公共前缀。 提示: 1 <= strs.length <= 200 ...
while(i<len(searchWord) and i<len(item)): if(searchWord[i]!=item[i]): break i+=1 if(i==len(searchWord)): return idx+1 return -1 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 参考文献 [LeetCode] [Java/Python 3] Straight forward codes....
有一个书店老板,他的书店开了n分钟。每分钟都有一些顾客进入这家商店。给定一个长度为n的整数数组customers,其中customers[i]是在第i分钟开始时进入商店的顾客数量,所有这些顾客在第i分钟结束后离开。 在某些分钟内,书店老板会生气。 如果书店老板在第i分钟生气,那么grumpy[i] = 1,否则grumpy[i] = 0。
代码 遍历+比较最大值+时间O(n) Python3 解题思路 此处撰写解题思路 代码 classSolution:defnumTimesAllBlue(self,light:List[int])->int:sum1=0max1=0foriinrange(len(light)):max1=max(max1,light[i])ifi+1==max1:sum1+=1returnsum1