Leetcode: 1108

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"

Constraints:

• The given address is a valid IPv4 address.

Solution

class Solution {
    public String defangIPaddr(String address) {
        //address = address.replace(".","[.]");
		//RegEx is using in ReplaceAll
        address = address.replaceAll("[.]","[.]");
        return address;
    }
}