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);
}