Given a string, find the first non repeating character in it and return it s index. If it doesn t exist, return . Examples: Note:You may assume the string contain only lowercase letters. 小写字母 首先这里假设只有 ...
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题目： 给定一个字符串，找到它的第一个不重复的字符，并返回它的索引。如果不存在，则返回 -1。 Given a string, find the first non-repeating character in it and return it's index. If it doesn't ...
Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: Note: You may ...
Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: Note: You may ...
You have a queue of integers, you need to retrieve the first unique integer in the queue. Implement the FirstUnique class: FirstUnique(int ...
import ( "unicode" ) func UcFirst(str string) string { for i, v := range str { return string(unicode.ToUpper(v)) + str[i+1 ...
题目如下： Given an array of strings arr. String s is a concatenation of a sub-sequence of arr which have unique characters. Return the maximum ...
原题链接在这里：https://leetcode.com/problems/maximum-length-of-a-concatenated-string-with-unique-characters/ 题目： Given an array of strings arr. String s ...
A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). Th ...
