【摘要】 1、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 = "loveleetcode",return ... 1、题目 Given a string, find the first non-repeating character in it and retur...
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" return0. s="loveleetcode", return2. 题解: 扫两遍string. 第一遍s.chatAt(i)的对应count++. 第二遍找第一个count为1的char, return其index. T...
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...
387. First Unique Character in a String 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 let...
leetcode 387. First Unique Character in a String 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....
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. 1. 2. 3. 4. 5. 题意:给定一个字符串,返回字符串中第一个在字符串中只出现过一次的字符的下...
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: You may assume the string contain only lowercase letters....
387. First Unique Character in a String(字符串中的第一个唯一字符)-- c语言 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:&nbs...387.字符串中的第一个唯一字符 First Unique Character in a String ...
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 doesn’t exist, return -1....
Given a strings,find the first non-repeating character in it and return its index. If it does not exist, return-1. 给定一个字符串,找到第一个不重复的字符,并返回其索引。如果不存在不重复的字符,则返回-1。 Input: s = "leetcode" Output: 0 解题思路 这个题目借鉴了一个大佬的解题思路:我们只...