Q11650 좌표정렬하기(java)

array를 이용. array.sort를 이용해서 정렬

 

import java.util.*;
 
class Q11650{
    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        int N = scan.nextInt();
        int[][] arr = new int[N][2];
 
        for(int i=0; i<N; i++){
            arr[i][0] = scan.nextInt();
            arr[i][1] = scan.nextInt();
        }
 
        Arrays.sort(arr, new Comparator<int[]>() {
            public int compare(int[] x, int[] y){
                if(x[0]>y[0])
                    return 1;
                else if(x[0]<y[0])
                    return -1;
                else{
                    if(x[1]>y[1])
                        return 1;
                    else if(x[1]<y[1])
                        return -1;
                }
                return 1;
 
            }
        });
 
        for(int i=0; i<N; i++){
            System.out.print(arr[i][0]);
            System.out.print(" ");
            System.out.println(arr[i][1]);
        }
 
    }
    
    
}