判断两个字符串或数组中有没有重复的元素

package cn.test;

public class change {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		String st1="23,344,32";
		String[] result1=st1.split(",");
		String st2="24,23";
		String[] result2=st2.split(",");
		int flag=0;
		for(int i=0;i<result1.length;i++){
			for(int j=0;j<result2.length;j++){
				if(result1[i].equals(result2[j])){
					flag=1;
				}
			}
		}
		System.out.println(flag);

	}

}