不系之舟王的专栏

import java.util.Arrays;import java.util.Scanner;public class SecondOj {public static void main(String[] args) {Scanner scan = new Scanner(System.in);int a = scan.nextInt();char[] sort = null;while (a

http://blog.youkuaiyun.com/dingsai88/article/details/51179187 http://blog.youkuaiyun.com/hongkangwl/article/details/12706935?utm_source=jiancool 参考上面文章，用到贪心算法 import java.io.BufferedReader; import