BOJ1730 판화 (R)

https://www.acmicpc.net/problem/1730

1730번: 판화

 

정답코드

import java.util.Scanner;

class Main
{
    public static void main (String[] args) {
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();
        String command = sc.hasNext() ? sc.next() : "";

        boolean[][] passVertical = new boolean[N][N];
        boolean[][] passHorizontal = new boolean[N][N];

        int curR = 0, curC = 0;
        for (int i = 0; i < command.length(); i++) {
            char cmd = command.charAt(i);
            if (cmd == 'D') {
                if (curR == N - 1) continue;;
                passVertical[curR][curC] = passVertical[curR + 1][curC] = true;
                curR++;
            }
            else if (cmd == 'U') {
                if (curR == 0) continue;
                passVertical[curR][curC] = passVertical[curR - 1][curC] = true;
                curR--;
            }
            else if (cmd == 'L') {
                if (curC == 0) continue;;
                passHorizontal[curR][curC] = passHorizontal[curR][curC - 1] = true;
                curC--;
            }
            else {
                if (curC == N - 1) continue;;
                passHorizontal[curR][curC] = passHorizontal[curR][curC + 1] = true;
                curC++;
            }
        }

        for (int i = 0; i < N; i++) {
            String ans = "";
            for (int j = 0; j < N; j++) {
                if (passHorizontal[i][j] && passVertical[i][j]) ans += "+";
                else if (passVertical[i][j]) ans += "|";
                else if (passHorizontal[i][j]) ans += "-";
                else ans += ".";
            }
            System.out.println(ans);
        }
    }
}

 

아래는 내가 초기에 시도했던 실패 코드( 예전에 그렷던 판화와 나중에 수직으로 겹치는 경우를 예상하지 못했음)

import java.util.*;
import java.io.*;
public class Main
{
    
    
	public static void main(String[] args) throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
		
		
		int n = Integer.valueOf(br.readLine());
		char[][] map = new char[n][n];
		for(char[] m :map){
		    Arrays.fill(m,(char)46);
		}
		
		
		
		
        String[] input = br.readLine().split("");
        int x=0;
        int y=0;
        String ex = "";
        
        
        
        
        
        
        for(int i=0; i<input.length ;i++){
            if(input[i].equals("D")){
                if(x+1>=n) continue;
                if(ex.equals("R")||ex.equals("L")){
                    map[x][y] = (char)43;
                }else{
                    map[x][y] = (char)124;
                }
                x+=1;
            }else if (input[i].equals("U")){
                if(x-1<0) continue;
                map[x-1][y] = (char) 124;
                if(ex.equals("R")||ex.equals("L")){
                    map[x][y] = (char)43;
                }else{
                    map[x][y] = (char)124;
                }
                x-=1;
            }else if (input[i].equals("R")){
                if(y+1>=n) continue;
                map[x][y+1] = (char) 45;
                if(ex.equals("U")||ex.equals("D")){
                    map[x][y] = (char)43;
                }else{
                    map[x][y] = (char)45;
                }
                y+=1;
            }else if (input[i].equals("L")){
                if(y-1<0) continue;
                map[x][y-1] = (char) 45;
                if(ex.equals("U")||ex.equals("D")){
                    map[x][y] = (char)43;
                }else{
                    map[x][y] = (char)45;
                }
                y-=1;
            }
            ex=input[i];
        }


		
		for(char[] ma :map){
		    for(char m :ma){
		        bw.write(m);
		    }
		    bw.write("\n");
		}
		
		
		
		bw.flush();
	}
}