Class: Shuffle

Inherits:
Object
  • Object
show all
Defined in:
lib/shuffle.rb

Constant Summary collapse

PREFIXES = 
{
  "mono" => 1,
  "di"   => 2,
  "tri"  => 3,
  "quad" => 4
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(sequence) ⇒ Shuffle

Returns a new instance of Shuffle.



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# File 'lib/shuffle.rb', line 13

def initialize(sequence)
  @sequence = if sequence.is_a?(String) && sequence !~ /\s/
    @rejoin = true
    sequence.split(//)
  else
    sequence
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object (private) 



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# File 'lib/shuffle.rb', line 102

def method_missing(name, *args, &block)
  if size = PREFIXES[name.to_s.match(/^(\w+)shuffle$/)[1]]
    shuffle(size.to_i)
  else
    super
  end
end

Instance Attribute Details

#rejoin ⇒ Object (readonly)

Returns the value of attribute rejoin.



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# File 'lib/shuffle.rb', line 11

def rejoin
  @rejoin
end

#sequence ⇒ Object (readonly)

Returns the value of attribute sequence.



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# File 'lib/shuffle.rb', line 11

def sequence
  @sequence
end

Instance Method Details

#shuffle(size) ⇒ Object 



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# File 'lib/shuffle.rb', line 22

def shuffle(size)
  shuffled_sequence = sequence.length > 1 ? shuffler(size) : sequence
  
  rejoin ? shuffled_sequence.join : shuffled_sequence
end

#valid?(other_sequence, size) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/shuffle.rb', line 28

def valid?(other_sequence, size)
  split_other_sequence = other_sequence.is_a?(String) && sequence !~ /\s/ ? other_sequence.split(//) : other_sequence
  
  frequency(sequence.each_cons(size)) == frequency(split_other_sequence.each_cons(size))
end

#validate_random(size) ⇒ Object 



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# File 'lib/shuffle.rb', line 34

def validate_random(size)
  valid?(shuffler(size), size)
end