java小练习之实现寻找子串（低效率版）

package com.atguigu.java1;


public class chazhao {
    public static void main(String[] args) {
        String s2 = "abcwerthelloyulodef";
        String s3 = "cvhellobnm";
        chazhao c = new chazhao();
        System.out.println(c.chaozhaochuan(s2, s3));
    }
    public String chaozhaochuan(String s, String s1){
        String max = s.length()>s1.length()?s:s1;
        String min = s.length()= 0;i--){
            for(int k = 0,j = i;j <= min.length() - 1;k++,j++){
                if(max.contains(min.substring(k, j))){
                    return min.substring(k, j);
                }
            }
        }
        return null;
    }
}