Count Repeated IP Addresses

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Your question is Count Repeated IP Addresses. Start with the requirements on the right.

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Problem

Given a list of log lines as strings, return the IP address that appears most often. Each valid line starts with an IPv4 address followed by a space and the rest of the message. Ignore malformed lines that do not start with a valid IPv4 address. If multiple IPs have the same highest count, return the lexicographically smallest one. If no valid IP exists, return an empty string.

Constraints

1 <= len(logs) <= 10^4
0 <= len(logs[i]) <= 200
Each line is a string
A valid IPv4 address has exactly 4 numeric parts
Each IPv4 part must be in the range 0 to 255

Function Signature

def most_frequent_ip(logs):

Your solutionPython 3

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