Sha256: 2df998f3d3094a62f6e51cc3890a483cffe7c450b020afc4ca42a19e573ad9b9
Contents?: true
Size: 1.09 KB
Versions: 185
Compression:
Stored size: 1.09 KB
Contents
const MINE = '*';
const DELTAS = [
[-1, -1],
[-1, 0],
[-1, 1],
[1, 1],
[1, 0],
[1, -1],
[0, 1],
[0, -1],
];
class Minesweeper {
annotate(rows) {
if (noDataPresent(rows)) {
return rows;
}
const inputBoard = rows.map(row => [...row]);
return stringify(
inputBoard.map((row, x) => [...row].map((cell, y) => cellToMineOrCount(cell, inputBoard, x, y))),
);
}
}
function cellToMineOrCount(cell, inputBoard, x, y) {
if (cell === MINE) {
return MINE;
}
return countAdjacentMines(inputBoard, x, y) || " ";
}
function countAdjacentMines(board, x, y) {
return DELTAS
.filter(d => adjacentSquareIsOnBoard(board, x, d))
.filter(d => adjacentSquareHasMine(board, x, y, d))
.length;
}
function stringify(board) {
return board.map(row => row.join(''));
}
function noDataPresent(rows) {
return rows.length === 0 || rows[0].length === 0;
}
function adjacentSquareIsOnBoard(board, x, d) {
return board[x + d[0]];
}
function adjacentSquareHasMine(board, x, y, d) {
return board[x + d[0]][y + d[1]] === MINE;
}
export default Minesweeper;
Version data entries
185 entries across 185 versions & 1 rubygems