문제

풀이

• 위아래로 굴렸을 때 바꿔줄 배열 ud
• 왼오로 굴렸을 때 바꿔줄 배열 lr
• 방향에 따라 배열을 돌려주었다. 배열의 3번 인덱스가 주사위의 바닥 1번 인덱스가 상단

코드

import java.io.*;
import java.util.*;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st;

        st=new StringTokenizer(br.readLine());
        n=Integer.parseInt(st.nextToken());
        m=Integer.parseInt(st.nextToken());
        y=Integer.parseInt(st.nextToken());
        x=Integer.parseInt(st.nextToken());
        k=Integer.parseInt(st.nextToken());
        board=new int[n][m];
        ud=new int[4];
        lr=new int[4];
        for(int i=0;i<n;i++){
            st=new StringTokenizer(br.readLine());
            for(int j=0;j<m;j++)board[i][j]=Integer.parseInt(st.nextToken());
        }
        st=new StringTokenizer(br.readLine());
        for(int i=0;i<k;i++){
            int dir=Integer.parseInt(st.nextToken())-1;
            int dy=y+d[dir][0];
            int dx=x+d[dir][1];
            if(dy<0||dx<0||dy>=n||dx>=m)continue;
            if(dir==0){
                swapRight(lr,ud,dy,dx);
            }
            else if(dir==1){
                swapLeft(lr,ud,dy,dx);
            }
            else if(dir==2){
                swapLeft(ud,lr,dy,dx);
            }
            else{
                swapRight(ud,lr,dy,dx);
            }
            y=dy;
            x=dx;
        }
    }

    static int n,m,x,y,k;
    static int[][] d=new int[][]{{0,1},{0,-1},{-1,0},{1,0}};
    static int[][] board;
    static int[] ud,lr;

    static void swapLeft(int[] arr,int[] other,int y,int x){
        int a=arr[0];
        for(int i=1;i<4;i++){
            arr[i-1]=arr[i];
        }
        arr[3]=a;
        if(board[y][x]==0){
            board[y][x]=arr[3];
        }
        else{
            arr[3]=board[y][x];
            board[y][x]=0;
        }
        other[1]=arr[1];
        other[3]=arr[3];
        System.out.println(arr[1]);
    }

    static void swapRight(int[] arr,int[] other,int y,int x){
        int a=arr[3];
        for(int i=2;i>=0;i--){
            arr[i+1]=arr[i];
        }
        arr[0]=a;
        if(board[y][x]==0){
            board[y][x]=arr[3];
        }
        else{
            arr[3]=board[y][x];
            board[y][x]=0;
        }
        other[1]=arr[1];
        other[3]=arr[3];
        System.out.println(arr[1]);
    }

}

#구현