import ( "unicode" ) func UcFirst(str string) string { for i, v := range str { return string(unicode.ToUpper(v)) + str[i+1:] } return "" } func LcFirst(str string) string { for i, v := range str { return string(unicode.ToLower(v)) + st…

Description Find the first unique character in a given string. You can assume that there is at least one unique character in the string. Example For "abaccdeff", return 'b'. 解题:返回仅出现一次,并且排在最前面的那个元素,而不是返回第一个不同的元素,一开始理解错了.如果仅仅对于ASCII中的256个字符,可以用数组…

iconv(): Detected an illegal character in input string 错误解决方法 //转码 function iconv_gbk_to_uft8($string){ if (!$string){ return ''; } $encode = mb_detect_encoding($string,array("ASCII","GB2312","GBK",'BIG5','UTF-8')); return ic…

387. First Unique Character in a String Easy Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" return 0. s = "loveleetcode", return 2. Note: You…

PHP传给JS字符串用ecsape转换加到url里,又用PHP接收,再用网上找的unscape函数转换一下,这样得到的字符串是UTF-8的,但我需要的是GB2312,于是用iconv转换 开始是这样用的 $str = iconv('UTF-8', 'GB2312', unescape(isset($_GET['str'])? $_GET['str']:")); 上线后报一堆这样的错:iconv() : Detected an illegal character in input string 考…

Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" return 0. s = "loveleetcode", return 2. Note: You may assume the string contain only lowercase…

Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" return 0. s = "loveleetcode", return 2. 分析:找出字符串中第一次出现且不重复的字符,返回其字符的下标,如果不存在就返回-1. 用hashMap进行求…

Problem: Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Example: s = "leetcode" return 0. s = "loveleetcode", return 2. 本题的第一想法是开一个字母表计数器,遍历string s中的元素,并利用计数器对每一个字母计…

原题链接在这里:https://leetcode.com/problems/first-unique-character-in-a-string/ 题目: Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" return 0. s = "lovele…

最近公司搬家了,有两天没写了,今天闲下来了,继续开始算法之路. leetcode的题目如下: Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" return 0. s = "loveleetcode", return 2. Note: Y…