Given"abcabcbb", the answer is"abc", which the length is 3. Given"bbbbb", the answer is"b", with the length of 1. Given"pwwkew", the answer is"wke", with the length of 3. Note that the answer must be a substring,"pwke"is asubsequenceand not a substring. 题目解析:意思就是...
Return the length of the longest valid subsequence ofnums. A subsequence is an array that can be derived from another array by deleting some or no elements without changing the order of the remaining elements. Example 1: Input:nums = [1,2,3,4] Output:4 Explanation: The longest valid subs...
Given"pwwkew", the answeris"wke",withthe lengthof3.Notethat the answer must be a substring,"pwke"isa subsequenceandnota substring. 思路: 遍历字符串,每个字符串都在map中查找是否有相同的字符,如果存在相同元素s[j],则计算(i-j)来计算长度;新的index_0即为j+1;然后在map中删除该元素,以确认下...
Can you solve this real interview question? Find the Highest Altitude - There is a biker going on a road trip. The road trip consists of n + 1 points at different altitudes. The biker starts his trip on point 0 with altitude equal 0. You are given an in
0344-reverse-string.py 0347-top-k-frequent-elements.py 0355-design-twitter.py 0367-valid-perfect-square.py 0371-sum-of-two-integers.py 0374-guess-number-higher-or-lower.py 0377-combination-sum-iv.py 0392-is-subsequence.py 0394-decode-string.py 0410-split-array-larges...
IsSubsequence.java Leetcode2529.java Max_Number_of_K_Sum_Pairs.java TrappingRainWater.java can_place_flowers.java container_with_most_water.java findTheHighestAltitude.java findThePivotIndex.java find_difference_two_arrays.java maxAvgSum.java maxSum.java maxVowels.java move_zeroes.java peakElement...
Given a stringS, return the number of substrings of lengthKwith no repeated characters. Example 1: Input: S ="havefunonleetcode", K =5 Output:6 Explanation: There are 6 substrings they are : 'havef','avefu','vefun','efuno','etcod','tcode'. ...
https://leetcode.com/problems/find-duplicate-file-in-system/ 题目描述 Given a list of directory info including directory path, and all the files with contents in this directory, you need to find out all the groups of duplicate files in the file system in terms of their path...
链接:https://leetcode-cn.com/problems/find-the-most-competitive-subsequence 著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。 思路是单调栈。题意是寻找一个长度为 K 的子序列且需要确保竞争力尽可能大,但是我第一次做的时候只是一味地照顾到了竞争力(栈中元素单调增)而没有照顾到栈中...
(_ file: String.SubSequence, _ dir: String.SubSequence) ->(String, String) {16let startIndex = file.index(of:"(")!17let endIndex =file.index(before: file.endIndex)18let contents = String(file[file.index(after: startIndex)..<endIndex])19let path = String(file[file.startIndex..<...