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Practice

String lab

⭐⭐ intermediate~55 min of coding5 challenges

substring math, filters, char maps, run counting, and double indexOf.

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What you will practice

  1. substring arithmetic⭐⭐ intermediate
  2. Filter digits⭐⭐ intermediate
  3. Map with char arithmetic⭐⭐ intermediate
  4. Fix the run counter⭐⭐ intermediate
  5. indexOf, twice⭐⭐ intermediate

Need the concept first? Re-read the lesson.