Defanging an IP Address

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.
SOLUTION:
class Solution:
    def defangIPaddr(self, address: str) -> str:
        n = len(address)
        op = ""
        for i in range(n):
            if address[i] == ".":
                op += "[.]"
            else:
                op += address[i]
        return op

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