# pothsn's solution

## to Scrabble Score in the Ruby Track

Published at Dec 05 2019 · 0 comments
Instructions
Test suite
Solution

Given a word, compute the scrabble score for that word.

## Letter Values

You'll need these:

``````Letter                           Value
A, E, I, O, U, L, N, R, S, T       1
D, G                               2
B, C, M, P                         3
F, H, V, W, Y                      4
K                                  5
J, X                               8
Q, Z                               10
``````

## Examples

"cabbage" should be scored as worth 14 points:

• 3 points for C
• 1 point for A, twice
• 3 points for B, twice
• 2 points for G
• 1 point for E

And to total:

• `3 + 2*1 + 2*3 + 2 + 1`
• = `3 + 2 + 6 + 3`
• = `5 + 9`
• = 14

## Extensions

• You can play a double or a triple letter.
• You can play a double or a triple word.

For installation and learning resources, refer to the Ruby resources page.

For running the tests provided, you will need the Minitest gem. Open a terminal window and run the following command to install minitest:

``````gem install minitest
``````

If you would like color output, you can `require 'minitest/pride'` in the test file, or note the alternative instruction, below, for running the test file.

Run the tests from the exercise directory using the following command:

``````ruby scrabble_score_test.rb
``````

To include color from the command line:

``````ruby -r minitest/pride scrabble_score_test.rb
``````

## Source

Inspired by the Extreme Startup game https://github.com/rchatley/extreme_startup

## Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.

### scrabble_score_test.rb

``````require 'minitest/autorun'
require_relative 'scrabble_score'

class ScrabbleTest < Minitest::Test
def test_empty_word_scores_zero
assert_equal 0, Scrabble.new('').score
end

def test_whitespace_scores_zero
skip
assert_equal 0, Scrabble.new(" \t\n").score
end

def test_nil_scores_zero
skip
assert_equal 0, Scrabble.new(nil).score
end

def test_scores_very_short_word
skip
assert_equal 1, Scrabble.new('a').score
end

def test_scores_other_very_short_word
skip
assert_equal 4, Scrabble.new('f').score
end

def test_simple_word_scores_the_number_of_letters
skip
assert_equal 6, Scrabble.new('street').score
end

def test_complicated_word_scores_more
skip
assert_equal 22, Scrabble.new('quirky').score
end

def test_scores_are_case_insensitive
skip
assert_equal 41, Scrabble.new('OXYPHENBUTAZONE').score
end

def test_convenient_scoring
skip
assert_equal 13, Scrabble.score('alacrity')
end
end``````
``````=begin
Write your code for the 'Scrabble Score' exercise in this file. Make the tests in
`scrabble_score_test.rb` pass.

To get started with TDD, see the `README.md` file in your
`ruby/scrabble-score` directory.
=end

class Scrabble

def initialize(string)
@string = string
end

def score
score = 0
if @string.nil?
return score
else
arr = @string.downcase.gsub(/[[:punct:]]|[[:space:]]/,'').split('')
arr.each do |str|
case str
when 'a', 'e', 'i', 'o', 'u', 'l', 'n', 'r', 's', 't'
score += 1
when 'd', 'g'
score += 2
when 'b', 'c', 'm', 'p'
score += 3
when 'f', 'h', 'v', 'w', 'y'
score += 4
when 'k'
score += 5
when 'j', 'x'
score += 8
when 'q', 'z'
score += 10
end
end
return score
end
end

def self.score(string)
(new string).score
end

end``````