LeetCode 1108: Defanging an IP Address Solution

Master LeetCode problem 1108 (Defanging an IP Address), a easy challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.

1108. Defanging an IP Address

Easy

String

Problem Explanation

Explanation:

To defang an IP address, we need to replace every period "." with "[.]". We can achieve this by iterating through the characters of the IP address string and constructing a new string with the required replacements.

Time complexity: O(n), where n is the length of the input IP address string.
Space complexity: O(n), where n is the length of the input IP address string.

Solution Code

class Solution {
    public String defangIPaddr(String address) {
        StringBuilder defanged = new StringBuilder();
        for (char c : address.toCharArray()) {
            if (c == '.') {
                defanged.append("[.]");
            } else {
                defanged.append(c);
            }
        }
        return defanged.toString();
    }
}

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What is the time complexity of LeetCode 1108 (Defanging an IP Address)?

The time complexity for LeetCode 1108 (Defanging an IP Address) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.

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