java获取两个字符串中最大子串

1.程序

package Demo2;public class Compare {    //获得两个字符串的最大子串，首先定义方法将两个字符串传入public static String GetMaxString(String str1, String str2) {//比较两个字符串大的为max,小的为min.String max = (str1.length() > str2.length()) ? str1 : str2;String min = max.equals(str1) ? str2 : str1;//对小的字符串进行遍历,截取从last到right,看max字符串中是否含有所截取字符，如果有，则结束。//否则继续last++,right--截取字符串与max中字符串比较for (int i = 0; i < min.length(); i++) {for (int last = 0, right = min.length() - i; right != min.length() + 1; last++, right--) {String sub = min.substring(last, right);if (max.contains(sub)) {return sub;}}}return null;}public static void main(String[] args) {String s1 = "wwwabcdqqqwww";String s2 = "xxxxxxxxxxabcdqqqyyyyyyyyy";String s = GetMaxString(s1, s2);System.out.println(s);}}

2.截图