백준 11651번 - 좌표정렬하기2

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

11651번: 좌표 정렬하기 2

문제풀이

11650번 좌표정렬하기와 비슷하면 (x좌표랑 y좌표만 바꾸면 된다)

 

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.Comparator;
 
public class BOJ11651 {
 
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        
        int N = Integer.parseInt(br.readLine().trim());
        int[][] arr = new int[N][2];
        String[] str = new String[2];
        for (int i = 0; i < N; i++) {
            str = br.readLine().split(" ");
            arr[i][0] =Integer.parseInt(str[0]);
            arr[i][1] = Integer.parseInt(str[1]);
        }
 
        Arrays.sort(arr, new Comparator<int[]>() {
            @Override
            public int compare(int[] x, int[] y) {
                if (x[0] == y[0]) {
                    return Integer.compare(x[1], y[1]);
                }
                return Integer.compare(x[0], y[0]);
            }
 
        });
 
        for (int i = 0; i < N; i++) {
            System.out.println(arr[i][0] + " " + arr[i][1]);
        }
 
    }
 
}