Function backTrack

javascript/0051-n-queens.js:41–62

(
    board,
    n,
    row,
    col,
    colSet,
    posDiagSet,
    negDiagSet,
    moves,
)

};

const backTrack = (
    board,
    n,
    row,
    col,
    colSet,
    posDiagSet,
    negDiagSet,
    moves,
) => {
    colSet.add(col);
    posDiagSet.add(row + col);
    negDiagSet.add(row - col);
    board[row][col] = 'Q';

    dfs(board, n, colSet, posDiagSet, negDiagSet, row + 1, moves);

    colSet.delete(col);
    posDiagSet.delete(row + col);
    negDiagSet.delete(row - col);
    board[row][col] = '.';
};