// 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.

//

// Runtime 0 ms Beats 100.00% of users with Java

// Memory 40.62 MB Beats 33.40% of users with Java

class Solution {

public String defangIPaddr(String address) {

StringBuilder sb = new StringBuilder(address);

int index = 0;

while (index < sb.length()) {

if (sb.charAt(index) == '.') {

sb.insert(index, '[');

sb.insert(index + 2, ']');

index = index + 2;

} else {

index++;

}

}

return sb.toString();

}

}