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.

这题不多说了，非常简单。

class DefangingAnIPAddress : public Solution {
public:
    void Exec() {

    }
    string defangIPaddr(string address) {
        string res;
        for (auto & c : address) {
            if (c == '.') {
                res += "[.]";
            } else {
                res.push_back(c);
            }
        }
        return res;
    }
};