class Solution(object): def firstUniqChar(self, s): s=s.lower() sList=list(s) numCdic={} for c in s: numCdic[c]=numCdic[c]+1 if c in numCdic else 1 for i in range(len(sList)): if numCdic[sList[i]]==1: return i return -1 sol=Solution() print sol.firstUniqChar...
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 letters. 1 2 3 4 5 6 7 8 9 10 11...
标签: Java Python 算法 收藏 LeetCode 387: 字符串中的第一个唯一字符 First Unique Character in a String 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...
classSolution:""" @param str: str: the given string @return: char: the first unique character in a given string """deffirstUniqChar(self,str):counter={}foriinrange(len(str)):counter[str[i]]=counter.get(str[i],0)+1foriinrange(len(str)):ifcounter[str[i]]==1:returnstr[i]retur...
[Algorithm] 387. First Unique Character in a String 2019-12-13 22:36 −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... ...
2019-12-13 22:36 −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... Zhentiw 0 172 利用Python进行数据分析-Pandas(第五部分-数据规整:聚合、合并和重塑) 2019...
UUID v4 provides no other information than randomness which can cause fragmentation in many data structures ULID provides: 128-bit compatibility with UUID 1.21e+24 unique ULIDs per millisecond Lexicographically sortable! Canonically encoded as a 26 character string, as opposed to the 36 character UUID...
let u = Upid::from_string("user_2accvpp5guht4dts56je5a"); u.to_string(); Get stuff out: u.prefix(); // user u.datetime(); // 2024-07-07 ... u.milliseconds(); // 17203... Convert to other formats: u.to_bytes(); Development Code and tests are in the upid_rs/ direct...
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