백준 JAVA 11651 좌표 정렬하기2

https://www.acmicpc.net/problem/11651

11651번: 좌표 정렬하기 2

 

 

package BAEKJOON.Silver.Ⅴ;

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

public class NO11651 {
    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();

        int[][] arr = new int[n][2];

        for (int i = 0; i < n; i++) {
            arr[i][0] = sc.nextInt();
            arr[i][1] = sc.nextInt();

        }
//        System.out.println(Arrays.deepToString(arr));

        Arrays.sort(arr, (o1, o2) -> {
            if(o1[1] == o2[1]) {
                return o1[0] - o2[0];
            } else {
                return o1[1] - o2[1];
            }
        });

        for (int[] nums : arr) {
            System.out.print(nums[0] + " " + nums[1]);
            System.out.println();
        }
    }
}