Module: Randomizer

Defined in:
lib/random_word_generator/randomizer.rb

Class Method Summary collapse

Class Method Details

.random_lengths_matching_sum(words = 3, length = 20, min = 4, max = 21) ⇒ Object

Generate random word lengths that add up to an exact amount For instance, we want 3 lengths which would when added together equal 20 Usage: random_lengths_matching_sum(3, 20)

> [3,7,10]

You can also specify a minimum and a maximum Usage: random_lengths_matching_sum(3, 20, 4, 21) We want 3 lenths, a sum of 20 and the minimum number would 4 and the max 21



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
 
# File 'lib/random_word_generator/randomizer.rb', line 19

def self.random_lengths_matching_sum(words=3, length=20, min=4, max=21 )

  min_word_length = min
  remaining_length = length
  remaining_words = nil
  random_length = nil
  total_removed = 0
  position = 0

  lengths = (1..words).map do |w|
    max_position = length - total_removed - (min_word_length * (remaining_words || words))
    # p "max position for split: #{max_position}"
    min_position = min_word_length
    # p "min location for split: #{min_position}"
  
    if min_position == max_position
      position = min_position
    else
      position = (min_position + rand(max_position - min_position))
    end
  
    # p "split position: #{position}"
    remaining_length = (remaining_length || length) - position
    # p "remaining length: #{remaining_length}"
    remaining_words = (remaining_words || words) - 1
    # p "remaining words: #{remaining_words}"
    total_removed = total_removed + position
    # p "removed #{total_removed}"
    # p "******"
    
    position
  end

  remainder = length - lengths.inject{|sum, n| sum = sum + n}
  if remainder > 0
    affected_index = rand(lengths.size)
    lengths[affected_index] = remainder + lengths[affected_index]
    # p "add #{remaining}"
  end

  return lengths 
end

.random_string(length = 8, mixed_case = true) ⇒ Object 



3
4
5
6
7
8
9
10
 
# File 'lib/random_word_generator/randomizer.rb', line 3

def self.random_string(length = 8, mixed_case = true)    
  if mixed_case
    chars = ("a".."z").to_a + ("A".."Z").to_a + ("1".."9").to_a
  else
    chars = ("a".."z").to_a + ("1".."9").to_a
  end
  Array.new(length, '').collect{chars[rand(chars.size)]}.join
end