给你一个由不同字符组成的字符串 allowed 和一个字符串数组 words 。如果一个字符串的每一个字符都在 allowed 中,就称这个字符串是 一致字符串 。 请你返回 words 数组中 一致字符串 的数目。 示例1: 输入:allowed = "ab", words = ["ad","bd","aaab","baa","badab"] 输出:2 解释:字符串 "aaa...
Can you solve this real interview question? Count Number of Special Subsequences - A sequence is special if it consists of a positive number of 0s, followed by a positive number of 1s, then a positive number of 2s. * For example, [0,1,2] and [0,0,1,1,1
[LeetCode] 2364. Count Number of Bad Pairs You are given a 0-indexed integer array nums. A pair of indices (i, j) is a bad pair if i < j and j - i != nums[j] - nums[i]. Return the total number of bad pairs in nums. Example 1: Input: nums = [4,1,3,3] Output: 5...
支持我的频道:https://zxi.mytechroad.com/blog/donation/代码:https://zxi.mytechroad.com/blog/algorithms/array/leetcode-1395-count-number-of-teams/油管:https://youtu.be/HrU-xrUnb8g自制视频 / 禁止搬运
Return the number of teams you can form given the conditions. (soldiers can be part of multiple teams). Example 1: Input: rating = [2,5,3,4,1] Output: 3 Explanation: We can form three teams given the conditions. (2,3,4), (5,4,1), (5,3,1). ...
在LeetCode 1973题中,DFS算法的时间复杂度是多少? 文章目录 1. 题目 2. 解题 1. 题目 Given the root of a binary tree, return the number of nodes where the value of the node is equal to the sum of the values of its descendants. A descendant of a node x is any node that is on the...
Number of Subarrays with Bounded Maximum Description Example Note Solution 1(C++) 后续更新 可以参考: LeetCode-713. Subarray Product Less Than K; LeetCode-560. Subarray Sum Equals K; LeetCode-209. Minimum Size Subarray Sum 算法分析 这一道题我一直被干扰了,被测试用例干扰了。其......
Can you solve this real interview question? Count Number of Nice Subarrays - Given an array of integers nums and an integer k. A continuous subarray is called nice if there are k odd numbers on it. Return the number of nice sub-arrays. Example 1:
count number,计数; pairs,数对; difference,差; absolute difference,差值的绝对值; absolute difference K,差值的绝对值=K。 题目:Given an integer arraynumsand an integerk, returnthe number of pairs(i, j)wherei < jsuch that|nums[i] - nums[j]| == k. ...
Given a stringpressedKeysrepresenting the string received by Bob, returnthetotal number of possible text messagesAlice could have sent. Since the answer may be very large, return itmodulo109+ 7. Example 1: Input:pressedKeys = "22233"Output:8Explanation:The possible text messages Alice could have...