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: string[]) {
        if (noDataPresent(rows)) {
            return rows
        }

        const inputBoard = rows.map((row) => [...row])

        const result = inputBoard.map((row, x) => [...row].map((cell, y) => cellToMineOrCount(cell, inputBoard, x, y)))

        return stringify(result as string[][])
    }
}

function cellToMineOrCount(cell: string, inputBoard: string[][], x: number, y: number) {
    if (cell === MINE) {
        return MINE
    }
    return countAdjacentMines(inputBoard, x, y) || " "
}

function countAdjacentMines(board: string[][], x: number, y: number) {
    return DELTAS
        .filter((d) => adjacentSquareIsOnBoard(board, x, d))
        .filter((d) => adjacentSquareHasMine(board, x, y, d))
        .length
}

function stringify(board: string[][]) {
    return board.map((row) => row.join(''))
}

function noDataPresent(rows: string[]) {
    return rows.length === 0 || rows[0].length === 0
}

function adjacentSquareIsOnBoard(board: string[][], x: number, d: number[]) {
    return board[x + d[0]]
}

function adjacentSquareHasMine(board: string[][], x: number, y: number, d: number[]) {
    return board[x + d[0]][y + d[1]] === MINE
}

export default Minesweeper

Version data entries

49 entries across 49 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.179	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.178	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.177	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.176	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.175	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.174	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.173	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.172	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.171	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.170	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.169	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.167	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.166	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.165	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.164	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.163	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.162	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.161	tracks/typescript/exercises/minesweeper/minesweeper.example.ts
trackler-2.2.1.160	tracks/typescript/exercises/minesweeper/minesweeper.example.ts