Given a string s, return the first non-repeating character in it and return its index. If it does not exist, return -1. 中文 针对给定的一个字符串 s,你需要写一个算法,返回给定字符串中不重复字符的位置(index),如果所有的字符在给定的字符串中都有重复的话,那么你应该返回 -1。 样例 下面给出...
英文 Given a string s, return the first non-repeating character in it and return its 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. 给一个字符串,返回第一个不重复的字符的index,要是没有的话就返回-1 //第一次做,感觉巨简单,设一个set,一旦contains,就用striing.indexOf()---还能用上不熟悉的函数,简直完...
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. 解题思路: 开个26个数的数组,然后先对字符串过一遍,统计每个字母出现的次数,然后从头再国一遍,第一个...
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...
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 s, return the first non-repeating character in it and return its index. If it does not exist, return -1. 中文 针对给定的一个字符串 s,你需要写一个算法,返回给定字符串中不重复字符。 这个题目在随后的面试中又出来变种。 这次需要函数返回的找到的字符串,同时输入的字符串中还有大...
Given a string s, returnthe first non-repeating character in it and return its index. If it does not exist, return -1. 中文 针对给定的一个字符串 s,你需要写一个算法,返回给定字符串中不重复字符的位置(index),如果所有的字符在给定的字符串中都有重复的话,那么你...
Java AI检测代码解析 class Solution { public int firstUniqChar(String s) { Map<Character, Integer> table = new HashMap<>(); for (int i = 0; i < s.length(); i++) { table.put(s.charAt(i), table.getOrDefault(s.charAt(i), 0) + 1); ...
ISqlInvalidCharacterDictionary ISqlKeywordDictionary ISQLPrivilege ISQLSyntax ISQLSyntax2 ISQLSyntax3 ISqlWorkspace ISqlWorkspace2 ISquareEdgesLayout IStatisticDescription IStatisticDescription2 IStatisticDescriptions IStatisticsRequest IStatisticsRequest2 IStringDomain ISubcircuit ISubtypes ISurface ISurface...