Class: SudokuBuilder::Builder

Inherits:
Sudoku
  • Object
show all
Defined in:
lib/sudoku_builder/builder.rb

Instance Method Summary collapse

Methods inherited from Sudoku

#build_crg, #check?, #pristine

Constructor Details

#initialize(sudoku) ⇒ Builder

Returns a new instance of Builder.



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# File 'lib/sudoku_builder/builder.rb', line 5

def initialize(sudoku)
  @sud = sudoku
end

Instance Method Details

#easy(poke_with = []) ⇒ Object 



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# File 'lib/sudoku_builder/builder.rb', line 64

def easy(poke_with = [])
  self.poke(55, poke_with)
end

#hard(poke_with = []) ⇒ Object 



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# File 'lib/sudoku_builder/builder.rb', line 68

def hard(poke_with = [])
  self.poke(65, poke_with)
end

#medium(poke_with = []) ⇒ Object 



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# File 'lib/sudoku_builder/builder.rb', line 60

def medium(poke_with = [])
  self.poke(45, poke_with)
end

#parse ⇒ Object 



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# File 'lib/sudoku_builder/builder.rb', line 9

def parse
  @sud.each do |k,v|
    if v.class == Array && v[0] == nil
      @sud[k] = []
    elsif v.class == Array && v[0] != nil
      @sud[k] = v[0]
    else
      @sud[k] = v
    end
  end
  @sud
end

#poke(number, poke_with = []) ⇒ Object

pokes holes in a built sudoku to make it solvable. arranged by level of difficulty.



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# File 'lib/sudoku_builder/builder.rb', line 31

def poke(number, poke_with = [])
  @sud.to_hash
  poke = []
  until poke.count == number            # number is related to difficulty.
    poke << rand(0..80)                 # 0 - 80 refers to the index of the sudoku cells.
    poke = poke.uniq
  end
  poke.each do |p|                      # pokes random holes.
    @sud[p] = poke_with
  end
  Builder.new(@sud)
end

#pretty_print ⇒ Object 



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# File 'lib/sudoku_builder/builder.rb', line 72

def pretty_print
  b = self.to_hash
  puts "+-----------------------------+"
  puts "| #{b[0]}  #{b[1]}  #{b[2]} | #{b[3]}  #{b[4]}  #{b[5]} | #{b[6]}  #{b[7]}  #{b[8]} |"
  puts "| #{b[9]}  #{b[10]}  #{b[11]} | #{b[12]}  #{b[13]}  #{b[14]} | #{b[15]}  #{b[16]}  #{b[17]} |"
  puts "| #{b[18]}  #{b[19]}  #{b[20]} | #{b[21]}  #{b[22]}  #{b[23]} | #{b[24]}  #{b[25]}  #{b[26]} |"
  puts "+-----------------------------+"
  puts "| #{b[27]}  #{b[28]}  #{b[29]} | #{b[30]}  #{b[31]}  #{b[32]} | #{b[33]}  #{b[34]}  #{b[35]} |"
  puts "| #{b[36]}  #{b[37]}  #{b[38]} | #{b[39]}  #{b[40]}  #{b[41]} | #{b[42]}  #{b[43]}  #{b[44]} |"
  puts "| #{b[45]}  #{b[46]}  #{b[47]} | #{b[48]}  #{b[49]}  #{b[50]} | #{b[51]}  #{b[52]}  #{b[53]} |"
  puts "+-----------------------------+"
  puts "| #{b[54]}  #{b[55]}  #{b[56]} | #{b[57]}  #{b[58]}  #{b[59]} | #{b[60]}  #{b[61]}  #{b[62]} |"
  puts "| #{b[63]}  #{b[64]}  #{b[65]} | #{b[66]}  #{b[67]}  #{b[68]} | #{b[69]}  #{b[70]}  #{b[71]} |"
  puts "| #{b[72]}  #{b[73]}  #{b[74]} | #{b[75]}  #{b[76]}  #{b[77]} | #{b[78]}  #{b[79]}  #{b[80]} |"
  puts "+-----------------------------+"
end

#to_hash ⇒ Object 



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# File 'lib/sudoku_builder/builder.rb', line 22

def to_hash
  @sud.each do |k,v|
    @sud[k] = v[0] if v.class == Array
  end
  @sud
end

#valid? ⇒ Boolean

checks if a sudoku is valid.

Returns:

  • (Boolean) 


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# File 'lib/sudoku_builder/builder.rb', line 45

def valid?
  valid = []
  @sud.each do |k,v|
    c = [] ; r = [] ; g = []
    build_crg(k,c,r,g,@sud)
    v.class == Array ? val = v[0] : val = v
    if check?(val, c,r,g)              # runs the check method used before on every value.
      valid << false
    else
      valid << true
    end
  end
  !valid.include?(false)
end