[백준] 1913번 : 달팽이 - Java(자바)

https://www.acmicpc.net/problem/1913

import java.io.*;
import java.util.*;
public class Main {
    public static void main(String args[]) throws IOException, NoSuchElementException {
        Scanner s=new Scanner(System.in);
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        int n=s.nextInt();
        int m=s.nextInt();
        int num=n*n;
        int t=0;
        int r=n;
        int arr[][]=new int[n][n];
        int x=0,y=0;
        while(num>0){
            x=t;
            y=t;
            for(int i=y;i<r;i++){
                arr[i][x]=num--;
            }
            y=r-1;
            for(int i=x+1;i<r;i++){
                arr[y][i]=num--;
            }
            x=r-1;
            for(int i=y-1;i>=t;i--){
                arr[i][x]=num--;
            }
            y=t;
            for(int i=x-1;i>t;i--){
                arr[y][i]=num--;
            }
            t++;
            r--;
        }
        int q=0;
        int w=0;
        for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                if(arr[i][j]==m){
                    q=i+1;
                    w=j+1;
                }
                bw.write(arr[i][j] + " ");
            }
            bw.newLine();
        }
        bw.write(q + " " + w);
        bw.flush();
    }
}