Compress Consecutive Characters

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Your question is Compress Consecutive Characters. Start with the requirements on the right.

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Problem

Given a string s, return a new string using run-length compression. Replace each group of consecutive repeated characters with the character followed by its count, but only when the count is greater than 1. The function should return the compressed string as a string.

Constraints

0 <= len(s) <= 10^5
s contains only English letters and digits
The solution should run in O(n) time

Function Signature

def compress_string(s):

Your solutionPython 3

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