백준[JAVA] 11650.좌표 정렬하기 - 자바

📖 문제

📃 코드

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.Comparator;
import java.util.StringTokenizer;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int N = Integer.parseInt(br.readLine());

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

        StringTokenizer st;

        for (int i = 0; i < N; i++) {
            st = new StringTokenizer(br.readLine());
            arr[i][0] = Integer.parseInt(st.nextToken());
            arr[i][1] = Integer.parseInt(st.nextToken());
        }

        Arrays.sort(arr, new Comparator<int[]>() {
            @Override
            public int compare(int[] e1, int[] e2) {
                if (e1[0] == e2[0]) {
                    return e1[1] - e2[1];
                } else {
                    return e1[0] - e2[0];
                }
            }
        });

        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < N; i++) {
            sb.append(arr[i][0] + " " + arr[i][1]).append('\n');
        }
        System.out.println(sb);
    }
}

 

🔗 링크

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

11650번: 좌표 정렬하기