1108-Defanging-an-IP-Address.py

'''
Given a valid (IPv4) IP address, return a defanged version of that IP address.

A defanged IP address replaces every period "." with "[.]".

 

Example 1:

Input: address = "1.1.1.1"
Output: "1[.]1[.]1[.]1"

Example 2:

Input: address = "255.100.50.0"
Output: "255[.]100[.]50[.]0"

 

Constraints:

    The given address is a valid IPv4 address.
'''
# Time Complexity: O(n)
# Space Complexity: O(1)
class Solution:
    def defangIPaddr(self, address: str) -> str:
        return '[.]'.join(address.split('.'))