71 lines
1.3 KiB
Markdown
Executable File
71 lines
1.3 KiB
Markdown
Executable File
---
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author: "Devoalda"
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authorEmoji: 🐺
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title: "Leetcode - Defanging an IP Address (1108)"
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date: 2023-02-12T08:00:54+08:00
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description: Leetcode Problem 1108
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draft: false
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hideToc: false
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enableToc: true
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enableTocContent: true
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tocPosition: inner
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tocLevels: ["h1", "h2", "h3"]
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libraries:
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- mathjax
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tags:
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- Java
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- Leetcode
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series:
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- Leetcode
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categories:
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-
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image:
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---
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# Introduction
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Given a valid (IPv4) IP address, return a defanged version of that IP address.
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A defanged IP address replaces every period "." with "[.]".
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## Input and Output
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Example 1:
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```
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Input: address = "1.1.1.1"
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Output: "1[.]1[.]1[.]1"
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```
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Example 2:
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```
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Input: address = "255.100.50.0"
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Output: "255[.]100[.]50[.]0"
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```
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## Process
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I've rarely done string replacement using Java, but upon looking around the internet
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for some resources, I found the `.replaceAll()` method that replaces characters in a string.
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Using this method, I was able to replace the `.`s in the given IP to `[.]`
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# Code
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```java
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class Solution {
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public String defangIPaddr(String address) {
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address = address.replaceAll("\\.", "[.]");
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return address;
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// One liner
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// return address.replaceAll("\\.", "[.]");
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}
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}
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```
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# Afterthoughts
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This is a simple challenge, I'll probably try it with other languages in the near future
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