숨어있는 숫자의 덧셈 (2) class Solution { fun solution(my_string: String) = my_string.replace("[^0-9]".toRegex(), " ").split(" ").filter { it != "" }.sumOf { it.toInt() } } 안전지대 class Solution { fun solution(board: Array): Int { var room = board val size1 = board.get(0).size val size2 = board.size for (i in 0 until size2){ for (j in 0 until size1){ if (board[i][j] != 1) continue val left = j - 1 val righ..