230726 바탕화면 정리

public int[] solution(String[] wallpaper) {
	int minRow = Integer.MAX_VALUE;
	int minCol = Integer.MAX_VALUE;
	int maxRow = Integer.MIN_VALUE;
	int maxCol = Integer.MIN_VALUE;

	int row = wallpaper.length;
	int col = wallpaper[0].length();

	for (int r = 0; r < row; r++) {
		for (int c = 0; c < col; c++) {
			if (wallpaper[r].charAt(c) == '#') {
				minRow = Math.min(minRow, r);
				minCol = Math.min(minCol, c);
				maxRow = Math.max(maxRow, r);
				maxCol = Math.max(maxCol, c);
			}
		}
	}

	return new int[] { minRow, minCol, maxRow + 1, maxCol + 1 };
}

출처:https://school.programmers.co.kr/learn/courses/30/lessons/161990