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Practice

Method mastery gauntlet

⭐⭐⭐ advanced~60 min of coding5 challenges

Five spec-hard methods; circle the operators, then implement.

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What you will practice

  1. Sum of even digits (recursive)⭐⭐ intermediate
  2. Count adjacent repeats in a list⭐⭐ intermediate
  3. Most frequent character (with a tie-break)⭐⭐⭐ advanced
  4. Adjacent-duplicate star insertion⭐⭐⭐ advanced
  5. Second distinct smallest (with a sentinel)⭐⭐⭐ advanced

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