leetcode 1108. Defanging an IP Address

Seawolf

1. Given a valid (IPv4) IP address, return a defanged version of that IP address.
   
2. 
   
3. A defanged IP address replaces every period "." with "[.]".
   
4. 
   
5. 
   
6. 
   
7. Example 1:
   
8. 
   
9. Input: address = "1.1.1.1"
   
10. Output: "1[.]1[.]1[.]1"
    
11. Example 2:
    
12. 
    
13. Input: address = "255.100.50.0"
    
14. Output: "255[.]100[.]50[.]0"

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1. class Solution {
   
2.     public String defangIPaddr(String address) {
   
3.         StringBuilder re = new StringBuilder();
   
4.         for(int i = 0; i< address.length(); i++){
   
5.             char a = address.charAt(i);
   
6.             if(a == '.') re.append("[.]");
   
7.             else re.append(a);
   
8.         }
   
9.         
   
10.         return re.toString();
    
11.     }
    
12. }

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