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...
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 ...
Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. 案例: Copys = "leetcode" 返回0. s = "loveleetcode", 返回 2. 注意事项:您可以假定该字符串只包含小写字母。 Note: You may assume the string contain only lowercase ...
Java Code: importjava.util.*;publicclassSolution{publicstaticvoidmain(String[]args){// Test the first_Uniq_Char function and print the resultStrings="wresource";System.out.println("Original String: "+s);System.out.println("First unique character of the above: "+first_Uniq_Char(s));}public...
生信技能树-数据挖掘课程笔记数据类型数值型 (numeric) 1.1 2 30 字符型 (character) "a" "bb" "ccc" 逻辑型 (logical) TRUE T FLASE F NA 变量赋值 string = "hello,world" string <- "hello,word" 比较运算比较运算的返回值是逻辑值TURE 、FALSE > 大于 < 小于 >=小于等于 >=大于等于 == 等于 ...
[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... ...
来自专栏 · python算法题笔记 class Solution: def minDeletions(self, s: str) -> int: char_freq_dict = {} for char in s: char_freq_dict[char] = char_freq_dict.setdefault(char, 0) + 1 char_freq_list = sorted( [(char, freq) for char, freq in char_freq_dict.items()], key=la...
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... Zhentiw 0 175 利用Python进行数据分析-Pandas(第五部分-数据规整:聚...
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...
UUID.hex:The UUID as a 32-character hexadecimal string. UUID.int:The integer representation of a UUID as a 128-bit integer. UUID.urn:The UUID as a uniform resource name. UUID.variant:The UUID variant, which determines the internal layout of the UUID. This will be one of the constants ...