Java学习总结

1.结构体排序

import java.util.*;

public class Main {
    
    static class Node{   //内部静态类
        String s;
        int x;
    }
    static class compareTo implements Comparator{  //升序排序
        public int compare(Node a,Node b){
            if(a.x>b.x) return 1;
            else if(a.x==b.x) return 0;
            else return -1;
        }
    }
//    static class compareTo implements Comparator