WindyCityRails Exercises.md

For all exercises, let’s make sure we’re collaborating, not just submitting as quick as possible. We are a community of professionals - let’s learn from each other!

While we need working software, we also want well-crafted software. So once we’ve got a working solution, let’s see how we can improve it for flexibility and maintainability, rather than jumping right to the next one.

• Driver: Lean on your team! Talk through your reasoning! Pass the keyboard in 5 minutes or less!
• Navigators: Ask questions! Suggest improvements empathetically!
• Narrator: Nudge folks as needed! Stick with the Easy difficulty setting!

Example Exercises, with extra credit ideas/prompts

• Algorithms
  • Warmup
    • Compare the Triplets: https://www.hackerrank.com/challenges/compare-the-triplets/problem
      • Extra credit: make the function open to extension (e.g. what if there were 4 or more pairs) - but don't break backwards compatibility!
  • Implementation
    • Grading Students: https://www.hackerrank.com/challenges/grading/problem'
      • Extra credit: discuss the extent to which DRY and performance can and should be traded off.
  • Strings
    • Super Reduced String: https://www.hackerrank.com/challenges/reduced-string/problem
      • Extra credit: how many different concerns can we identify, and can we create methods for them?
• Data Structures
  • Arrays
    • Left Rotation: https://www.hackerrank.com/challenges/array-left-rotation/problem
      • Extra credit: what can we do about these names?