LeetCode 1108. Defanging an IP Address

Problem Statement

impl Solution {
    pub fn defang_i_paddr(address: String) -> String {
        let mut ans = "".to_string();
        for c in address.chars() {
            if c != '.' {
                ans.push(c);

            } else { 
                ans.push_str("[.]"); 
            }
        }
        return ans;
    }
}