Add shuffle method to Array class : Array Extension « Array « Ruby

  1. Ruby
  2. Array
  3. Array Extension




Add shuffle method to Array class


class Array
  def shuffle!
    each_index do |i|
      j = rand(length-i) + i
      self[j], self[i] = self[i], self[j]
    end
  end

  def shuffle
    dup.shuffle!
  end
end










Related examples in the same category

1.Add your method to system data type
2.Add a new method to Array class
3.strip values from array
4.Extract array in place
5.Array cartesian
6.Add method to Array class to convert an array to a hash
7.each from both sides
8.Extends array comparsion method
9.Override array method
10.Add new operator for Array
11.Add subset and superset operator for Array
12.Set permutation for Array
13.Resequence the array
14.Use hash to count elements in an array
15.convert array to a hash