백준11650: 좌표 정렬하기

문제

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

문제 풀이

import java.util.*;

public class Main {
    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 < arr.length; i++) {
            arr[i][0] = sc.nextInt();
            arr[i][1] = sc.nextInt();
        }

        Arrays.sort(arr, (e1, e2) -> {
            if(e1[0] == e2[0]) {
                return e1[1] - e2[1];
            } else {
                return e1[0] - e2[0];
            }
        });

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