Java实现获取两个字符串中最大相同子串。

如题

package com.mxh.java01;

import org.junit.Test;


public class StringDemo03 {

    

    //前提：两个字符串只有一个最大相同的子串
    public String getMaxSameString(String str1, String str2) {
        if (str1 != null && str2 != null) {
            String maxStr = (str1.length() >= str2.length()) ? str1 : str2;
            String minStr = (str1.length() < str2.length()) ? str1 : str2;

            int Length = minStr.length();
            for (int i = 0; i < Length; i++) {
                for (int x=0 ,y=Length-i ;y<=Length ;x++,y++ ) {
                     String subStr = minStr.substring(x,y);
                     if (maxStr.contains(subStr)){
                         return subStr;
                     }
                }
            }
        }
        return null;
    }


    @Test
    public void  TEss01(){
        String s1 = "我是羊村苗小猴，我喜欢吃西瓜";
        String s2  = "ashdk我喜欢跳吃";
        String maxSameString = getMaxSameString(s1, s2);
        System.out.println("maxSameString = " + maxSameString);

    }



}

结果：