spongebobify.rb

require 'rspec'

RSpec.describe do
  %w(spongebobify minisponge).each do |method|
    context "##{method}" do
      it 'fox' do
        expect(send(method, 'fox')).to eq('fOx')
        expect(send(method, 'FOX')).to eq('fOx')
      end

      it 'i' do
        expect(send(method, 'i')).to eq('I')
        expect(send(method, 'I')).to eq('I')
      end

      it 'i love pie' do
        expect(send(method, 'i love pie')).to eq('I LoVe piE')
      end

      it 'brown' do
        expect(send(method, 'brown')).to eq('bRoWn')
        expect(send(method, 'BROWN')).to eq('bRoWn')
      end

      it 'lazy' do
        expect(send(method, 'lazy')).to eq('LaZy')
      end

      it 'billiards' do
        expect(send(method, 'billiards')).to eq('biLLiArDs')
      end

      it 'quick' do
        expect(send(method, 'quick')).to eq('qUiCk')
      end

      it 'spongebobifies' do
        expect(send(method, 'the quick brown fox jumps over the lazy dog')).to eq('tHe qUiCk bRoWn fOx jUmPs oVeR tHe LaZy dOg')
      end
    end
  end
end

def spongebobify(str)
  str.downcase.split(' ').map do |word|
    next 'I' if 'i' == word
    lowercase = true
    word.chars.map do |char|
      case char
      when 'l'
        'L'
      when 'i'
        lowercase = false
        'i'
      else
        lowercase = !lowercase
        lowercase ? char.upcase : char
      end
    end.join
  end.join(' ')
end

def minisponge(s)
  # 103 chars
  s.downcase.split.map{|w|l=!p&&w==?i??I:w.chars.map{|c|c[?l]??L:c[?i]?l=!p&&c:(l=!l)?c:c.upcase}*''}*' '
end

97 char version

s.downcase.split.map{|w|l=!p&&w==?i??I:w.chars.map{|c|c[?l]??L:c[?i]?c:(l=!l)?c:c.upcase}*''}*' '

---

Doesn't work for "quick" as it transforms it to "qUicK" instead of "qUiCk".