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Practice

STL Problem Set

⭐⭐ intermediate~45 min of coding5 challenges

Ordered dedup, frequency maps, lower_bound on a multiset, greedy with a heap, and stack-based validation.

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What you will practice

  1. Distinct, in Order⭐ beginner
  2. Word Census⭐ beginner
  3. Replacement Search⭐⭐ intermediate
  4. Two-Heap Gifts⭐⭐ intermediate
  5. Bracket Balance⭐⭐ intermediate

Need the concept first? Re-read the lesson.