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# 2022-06-21

## [1108. Defanging an IP Address](https://leetcode.com/problems/defanging-an-ip-address/)

### Description

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

#### Approach #0

```go
func defangIPaddr(address string) string {
    return strings.ReplaceAll(address, ".", "[.]")
}
```