[프로그래머스] 공원 산책 - kotlin

지나다니는 길을 'O', 장애물을 'X'로 나타낸 직사각형 격자 모양의 공원에서 로봇 강아지가 산책을 하려합니다. 산책은 로봇 강아지에 미리 입력된 명령에 따라 진행하며, 명령은 다음과 같은 형식으로 주어집니다.

class Solution {
    
    fun solution(park: Array<String>, routes: Array<String>): IntArray {
        val maxRow = park.size
        val maxCol = park[0].length
        var currentRow: Int = -1
        var currentCol: Int = -1
        val parkList = mutableListOf<List<Char>>()

        for ((indexX, str) in park.withIndex()) {
            parkList.add(str.toList())

            if (currentRow == -1) {
                val indexY = str.indexOf('S')
                if (indexY >= 0) {
                    currentRow = indexX
                    currentCol = indexY
                }
            }
        }

        loop@for (str in routes) {
            val move = str[2].toString().toInt()
            when (str[0]) {
                'N' -> {
                    if (currentRow - move < 0) continue@loop

                    for (i in 1..move) {
                        if (parkList[currentRow - i][currentCol] == 'X') continue@loop
                    }

                    currentRow -= move
                }
                'S' -> {
                    if (currentRow + move >= maxRow) continue@loop

                    for (i in 1..move) {
                        if (parkList[currentRow + i][currentCol] == 'X') continue@loop
                    }

                    currentRow += move
                }
                'W' -> {
                    if (currentCol - move < 0) continue@loop

                    for (i in 1..move) {
                        if (parkList[currentRow][currentCol - i] == 'X') continue@loop
                    }

                    currentCol -= move
                }
                'E' -> {
                    if (currentCol + move >= maxCol) continue@loop

                    for (i in 1..move) {
                        if (parkList[currentRow][currentCol + i] == 'X') continue@loop
                    }

                    currentCol += move
                }
            }
        }

        return intArrayOf(currentRow, currentCol)
    }
}