Method printBoard

Backtracking/Sudoku.js:63–77

(output = (...v) => console.log(...v))

  }

  printBoard(output = (...v) => console.log(...v)) {
    // helper function to display board
    for (let i = 0; i < 9; i++) {
      if (i % 3 === 0 && i !== 0) {
        output('- - - - - - - - - - - -')
      }
      output(
        ...this.getSection(i, [0, 3]),
        ' | ',
        ...this.getSection(i, [3, 6]),
        ' | ',
        ...this.getSection(i, [6, 9])
      )
    }
  }
}

export { Sudoku }