Leetcode - Defanging an IP Address Solution

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 = ""
Output: "1[.]1[.]1[.]1"

Example 2:

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


  • The given address is a valid IPv4 address.

Solution in Python

class Solution:
    def defangIPaddr(self, address: str) -> str:
        return address.replace(".", "[.]")