1108. Defanging an IP Address

Problem

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 (Java)

class Solution {
    public String defangIPaddr(String address) {
        return address.replace(".", "[.]");
    }
}

Explain:

nope.

Complexity:

• Time complexity : O(n).
• Space complexity : O(n).