#1108 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.

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Solution1：

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

 

Solution2:

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