We're going to practice solving some Ruby problems and be introduced to the rspec part of Ruby testing.
These questions vary in level from quite easy to fairly hard.
Work through them and check if they're correct by running rspec after trying some code.
You should be able to answer most questions with a couple of lines of code, and just a few methods.
If you're writing a long, complex solution, there's probably a better way.
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- Fork this repo to your own Github
- Clone it down to your local machine
- Run
bundle install(you may need an extra something to get this working ... ) - Answer the first question (in the challenge section)
- Make a commit the answer and push it up to your repo
- Send a pull request straight away (yes - after your first answer)
- Answer the second question (in the challenge section)
- Commit the answer and push it up to your repo
- and repeat to get into the habit of learning both Ruby and Version Control
... the PR will automatically update itself!
To run the specs, just run
$ rspec questions_spec.rb
Good luck
- Try and get the RSpec tests to pass (but not by cheating - i.e. hardcoding the expected value)
- You shouldn't need any extra libraries or gems
- The cleaner your code the better!
- Googling is fine as usual
- Use the ruby docs http://www.ruby-doc.org/
- Try and break down the problems into smaller chunks. For e.g. if you google "How to select elements in an array that start with a", you won't have much luck. Try and find out a) how to select certain elements in an array, b) how to test if a string starts with an 'a'
- Don't forget Enumerable (advanced array methods)
- Don't panic 😉