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Sparse Arrays
Sparse Arrays
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This is a possible solution in Java:
This has a runtime complexity of O(m + n) where m is the length of strings and n the length of queries.
C# - O(n) - The code iterates through the 'queries' list, and for each query, it performs a lookup in the dictionary 'frequency'. The dictionary lookup operation is O(1) on average. Therefore, the overall time complexity is O(n), where n is the number of elements in the 'queries' list.
C#
JavaScript functional solution: