[백준 BOJ/Silver V] 11650번 : 좌표 정렬하기

https://www.acmicpc.net/problem/11650

11650번: 좌표 정렬하기

 

import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[][] num = new int[N][2];
        for(int i=0; i<N; i++) {
                num[i][0] = sc.nextInt();
                num[i][1] = sc.nextInt();
        }


        Arrays.sort(num, new Comparator<int[]>() {
            @Override
            public int compare(int[] o1, int[] o2) {
                if (o1[0] == o2[0]) {
                    return o1[1] - o2[1];
                } else {

                    return o1[0] - o2[0];
                }
            }
        });

        for(int i=0; i<N; i++) {
            System.out.println(num[i][0] + " " + num[i][1]);
        }
    }
}

 

Comparator 쓰는거에 조오오오금 익숙해졌다!