判断两个字符串里是否有重复

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
String zifu1=sc.next();
String zifu2=sc.next();
int i=0,j=0,z=0;
char arr1[]=zifu1.toCharArray();
char arr2[]=zifu2.toCharArray();
x:for(i=0;i

break x;

跳出最外层for循环，否则会重复输出“yes”