# recroot89's solution

## to Scrabble Score in the Ruby Track

Published at Nov 24 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``````
``````# frozen_string_literal: true

# Write your code for the 'Scrabble Score' exercise in this file. Make the tests in
# `scrabble_score_test.rb` pass.
#
# To get started with TD'D' => 1, see the `README.md` file in your
# `ruby/scrabble-score` directory.

class Scrabble
SCORES = {
'A' => 1,
'E' => 1,
'I' => 1,
'O' => 1,
'U' => 1,
'L' => 1,
'N' => 1,
'R' => 1,
'S' => 1,
'T' => 1,
'D' => 2,
'G' => 2,
'B' => 3,
'C' => 3,
'M' => 3,
'P' => 3,
'F' => 4,
'H' => 4,
'V' => 4,
'W' => 4,
'Y' => 4,
'K' => 5,
'J' => 8,
'X' => 8,
'Q' => 10,
'Z' => 10
}.freeze

def initialize(word)
@word = word ? word.tr('^A-Za-z', '').upcase : ''
end

def score
word.chars.reduce(0) { |acc, char| acc + SCORES[char] }
end

def self.score(word)
new(word).score
end
end``````