Question: Write a function contains _ permutation that takes two inputs: input _ string : a string pattern: a string and returns True if input _

Write a function contains_permutation that takes two inputs:
input_string : a string pattern: a string
and returns True if input_string contains a substring (group of consequtive characters) that is a permutation of pattern and False otherwise. Your function must have a running time complexity of O(n), where n is the length of input_string.

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