Wun Code

Ruby exam

This exam measures what you've actually learned, in three stages: Easy, Medium, then Hard. Each stage unlocks the next. There are no hints and no ready-made solutions, so it's just you and your code, graded automatically like in the lessons.

  1. Stage 1Locked

    Easy

    • GradingA case statement with ranges8 min
    • Order totalAn array of hashes and Enumerable methods10 min
  2. Stage 2Locked

    Medium

    • Most frequent wordsCounting with tally and sorting by two keys13 min
    • Alphabetical indexGrouping with group_by and transforming values12 min
  3. Stage 3Locked

    Hard

    • InventoryA class that mixes in Enumerable18 min
    • Comparable productsMixing in Comparable and a module of your own18 min