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.

Rust Solution

struct Solution;

impl Solution {
    fn defang_i_paddr(address: String) -> String {
        address.replace(".", "[.]")
    }
}

#[test]
fn test() {
    let address = "1.1.1.1".to_string();
    let res = "1[.]1[.]1[.]1".to_string();
    assert_eq!(Solution::defang_i_paddr(address), res);
    let address = "255.100.50.0".to_string();
    let res = "255[.]100[.]50[.]0".to_string();
    assert_eq!(Solution::defang_i_paddr(address), res);
}

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