Class: Sudoku::Grid

Inherits:
Object
  • Object
show all
Defined in:
lib/sudoku/grid.rb,
lib/sudoku/grid/cell.rb

Defined Under Namespace

Classes: Cell

Instance Method Summary collapse

Constructor Details

#initialize(string = nil) ⇒ Grid

Returns a new instance of Grid.



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# File 'lib/sudoku/grid.rb', line 5

def initialize(string=nil)
  @rows = if string
    string.split($/).collect { |row|
      row.split(',').collect { |value| Cell.new(self, value.to_i) }
    }
  else
    (1..9).collect { |n| [] }
  end
end

Instance Method Details

#[]=(column, row, value) ⇒ Object 



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# File 'lib/sudoku/grid.rb', line 15

def []=(column, row, value)
  @rows[row - 1][column - 1] = value
end

#cells ⇒ Object 



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# File 'lib/sudoku/grid.rb', line 19

def cells
  @rows.flatten
end

#column(cell) ⇒ Object 



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# File 'lib/sudoku/grid.rb', line 27

def column(cell)
  row = @rows.find { |r| r.include?(cell) }
  row.index(cell) + 1
end

#filled_cells ⇒ Object 



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# File 'lib/sudoku/grid.rb', line 23

def filled_cells
  cells.select { |c| c.filled? }
end

#row(cell) ⇒ Object 



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# File 'lib/sudoku/grid.rb', line 32

def row(cell)
  row = @rows.find { |r| r.include?(cell) }
  @rows.index(row) + 1
end

#to_s ⇒ Object 



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# File 'lib/sudoku/grid.rb', line 37

def to_s
  row_divider = (1..3).collect { "\e[37m---|---|---\e[0m" }.join('|')
  row_divider = "\n#{row_divider}\n"

  row_group_divider = (1..3).collect { '-' * 11 }.join('+')
  row_group_divider = "\n#{row_group_divider}\n"

  [0..2, 3..5, 6..8].collect { |row_group|
    @rows[row_group].collect { |row|
      [0..2, 3..5, 6..8].collect { |col_group|
        col_group.collect { |column|
          " #{row[column] || ' '} "
        }.join("\e[37m|\e[0m")
      }.join('|')
    }.join(row_divider)
  }.join(row_group_divider)
end