找出字符串中第一个只出现一次的字符

/** *  */package testString;import java.util.Scanner;/** *@author: Administrator *@date: 2016-12-27 下午09:32:13 */public class Main {public static void main(String[] args){Scanner sc=new Scanner(System.in);String str=sc.nextLine();char a=FindChar(str);System.out.println(a);sc.close();}public static char FindChar(String str){int[] count =new int[128];for(int i=0;i<str.length();i++){count[str.charAt(i)]++;}for(int i=0;i<str.length();i++)if(count[str.charAt(i)]==1)return str.charAt(i);return '.';}}