POG 바탕화면 정리

링크

코드

class Solution {
    fun solution(wallpaper: Array<String>): IntArray {
        val answer = intArrayOf(wallpaper.size, wallpaper[0].length, 0, 0)

        wallpaper.forEachIndexed { rowIndex, rowItem ->
            rowItem.forEachIndexed { columnIndex, columnItem ->
                if (columnItem == '#') {
                    answer[0] = answer[0].coerceAtMost(rowIndex)
                    answer[1] = answer[1].coerceAtMost(columnIndex)
                    answer[2] = answer[2].coerceAtLeast(rowIndex + 1)
                    answer[3] = answer[3].coerceAtLeast(columnIndex + 1)
                }
            }
        }

        return answer
    }
}