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  1. Prepare
  2. Data Structures
  3. Arrays
  4. Sparse Arrays
  5. Discussions

Sparse Arrays

  • wesleywchang
     + 0 comments

    Python: allocate extra space for linear runtime

    from collections import Counter

def matchingStrings(stringList, queries):
    # Write your code here
    counts = Counter(stringList)
    return [counts[query] for query in queries]