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Given an array of elements, return the frequency count of each element as a dictionary or map. This problem tests your ability to efficiently count occurrences of items using appropriate data structures.
An array or list of elements (e.g., integers or strings).
A dictionary or map with elements as keys and their frequency counts as values.
The size of the array can be large, so aim for O(n) time complexity. Elements can be of any hashable type.