Bowling Score Calculator

The calculator's input is a string that consists of:

• [1-9] numbers
• "x" for strike
• "/" for spare
• "-" for miss

For example, a Thanksgiving Turkey (300) looks like this:

xxxxxxxxxx

whereas a regular game (82) would be

9/3561368153258-7181

If the string containx strikes (x), the entire frame is marked as a single x

x45 # 10 + 9 + 4 + 5 = 28

Todo

Calculate the final score for a ten-pin bowling game by implementing the ScoreKeeper class. Please send your solution once tests are green.

Bonus points

• solution written in ruby
• describe the complexity of the algorithm using Big O notation
• additional tests for edge cases, i.e. "999" is not a valid run and the calculator should raise an exception

Running tests

Make sure to have ruby and rspec installed,

• rspec ~> 3.0
• ruby ~> 2.0

then run command

$ cd bowling/
$ rspec bowling_spec.rb