题解 | #成绩排序#

import java.util.*;

public class Main{

public static void main(String[] args){
   Scanner s = new Scanner(System.in);
    int num =Integer.parseInt(s.nextLine());
    int type = Integer.parseInt(s.nextLine());
    String[] scores = new String[num];
    for (int i =0;i<num;i++){
        scores[i] =s.nextLine();
    }

    Arrays.sort(scores, new Comparator<String>() {
        @Override
        public int compare(String o1, String o2) {
            int score1 = Integer.parseInt(o1.split(" ")[1]);
            int score2 = Integer.parseInt(o2.split(" ")[1]);
            if (type==1){
                return Integer.compare(score1,score2);
            }else{
                return Integer.compare(score2,score1);
            }
        }
    });

    for (int i=0;i<num;i++){
        System.out.println(scores[i]);
    }
}

}