Method backTrack

javascript/0212-word-search-ii.js:75–85

(board, row, rows, col, cols, node, words)

    }

    backTrack(board, row, rows, col, cols, node, words) {
        const char = board[row][col];

        board[row][col] = '#';

        for (const [_row, _col] of this.getNeighbors(row, rows, col, cols)) {
            this.dfs(board, _row, rows, _col, cols, node, words);
        }

        board[row][col] = char;
    }

    getNeighbors(row, rows, col, cols) {
        return [