“Popular demand,” yeah… right… That’s the ticket. Anyway, I saw this blog entry by Jamie this morning which caused me to write a Ruby program to mix up the letters of words, leaving the first and last letter as they were. I started out with a simple script, then I added better punctuation support, then I converted it to a class, then I wrote unit tests to run it. Anyway, somebody wanted to see it, so here it is. Is it great code? Probably not. Do I care? Not really.
1 class Mixer 2 private 3 def randomize(str) 4 if str.length < 4 5 return str 6 end 7 8 letters = str.split(//) 9 10 first = letters[0] 11 mid = letters[1..(letters.length - 2)] 12 last = letters[letters.length - 1] 13 14 new_letters = "" 15 16 while mid && mid.length > 0 17 len = mid.length 18 r = rand(len) 19 new_letters << mid.delete_at(r) 20 end 21 22 first + new_letters + last 23 end 24 25 public 26 def mix_file(filename) 27 lines = IO.readlines(filename) 28 29 mix_lines(lines) 30 end 31 32 def mix_string(str) 33 new_str = "" 34 35 mix_lines(str.split).each do |line| 36 new_str << line 37 end 38 39 new_str 40 end 41 42 def mix_lines(lines) 43 lines.collect! do |line| 44 new_line = "" 45 46 line.split(/s+|,|.|!|(|)|"|'/).each do |word| 47 new_line << randomize(word) << " " 48 end 49 50 new_line 51 end 52 53 lines 54 end 55 end
And the unit tests, which don’t actually test anything.
1 require 'test/unit' 2 require 'mix' 3 4 class MixTest < Test::Unit::TestCase 5 def setup() 6 @mixer = Mixer.new 7 end 8 9 def test_word() 10 x = @mixer.mix_string("testing") 11 puts x 12 assert_not_equal("testing", x, "String not randomized") 13 end 14 15 def test_string() 16 x = @mixer.mix_string("this is a humongous test, dangit") 17 puts x 18 end 19 20 def test_file() 21 article = @mixer.mix_file("testfile.txt") 22 #puts article 23 end 24 end
I’m sure someone will find this useful… Again, “yeah, right.” Ah well, it was a mildly amusing diversion…
Joey Gibson's Blog 