题目

class Solution {public int firstUniqChar(String s) {int[] sum = new int[26];char[] num = s.toCharArray();for(int i=0;i<num.length;i++) {sum[num[i]-'a']++;}for(int j=0;j<num.length;j++) {if(sum[num[j]-'a'] == 1) {return j;}}return -1;                
}
}

题目

import java.util.Scanner;public class Main {public static void main(String[] args) {Scanner sc = new Scanner(System.in);String s = sc.nextLine();String[] sum = s.split(" ");System.out.println(sum[sum.length-1].length());sc.close();}
}