# sansbrina's solution

## to Scrabble Score in the Ruby Track

Published at Jan 13 2020 · 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
class Scrabble
def initialize(word)
@word = word.to_s.strip
@score_hash = generate_score_hash
end

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

def score
return 0 if word.empty?
word.split('').sum { |c| score_hash[c.upcase] }
end

private
attr_accessor :word, :score_hash

def generate_score_hash
hash = {}
["A", "E", "I", "O", "U", "L", "N", "R", "S", "T"].each{|letter| hash[letter] = 1}
["D", "G"].each{|letter| hash[letter] = 2}
["B", "C", "M", "P"].each{|letter| hash[letter] = 3}
["F", "H", "V", "W", "Y" ].each{|letter| hash[letter] = 4}
hash["K"] = 5
["J", "X"].each{|letter| hash[letter] = 8}
["Q", "Z"].each{|letter| hash[letter] = 10}
hash
end
end