프로그래머스 캐릭터의 좌표(JAVA)

https://school.programmers.co.kr/learn/courses/30/lessons/120861

프로그래머스

 

 

 

class Solution {
    private static final String[] DIR = {"up", "right", "down", "left"};
    private static final int[] DY = {1,0,-1,0};
    private static final int[] DX = {0,1,0,-1};
    public int[] solution(String[] keyinput, int[] board) {
        int[] answer = {};
        int y = 0;
        int x = 0;
        int maxY = board[1]/2;
        int maxX = board[0]/2;
        for(String str : keyinput){
            for(int i = 0 ; i < 4; i++){
                if(DIR[i].equals(str)){
                    y += DY[i];
                    x += DX[i];
                    if(y < -maxY || y > maxY || x < -maxX || x > maxX){
                        y -= DY[i];
                        x -= DX[i]; 
                    }
                    break;
                }
            }
        }
        answer = new int[] {x,y};
        return answer;
    }
}