Question: Dictionaries.py Python code Write the function most common substring(S,m) that receives a string S and an integer m and returns the substring of length m

Dictionaries.py

Python code

Write the function most common substring(S,m) that receives a string S and an integer m and returns the substring of length m that appears the most times in S and the number of times that substring appears. Your solution must use a dictionary and run in time O(n).

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