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.

Problem Summary

Given a valid IPv4 address address, return the defanged version of this IP address. A defanged IP address simply replaces every "." with "[.]".

Note:

• The given address is a valid IPv4 address

Solution Approach

• Given an IP address, replace the dots with [.].
• Easy problem; just replace according to the problem statement.

Code

package leetcode

import "strings"

func defangIPaddr(address string) string {
	return strings.Replace(address, ".", "[.]", -1)
}