Package g0501_0600.s0535_encode_and_decode_tinyurl

Class Codec

java.lang.Object

g0501_0600.s0535_encode_and_decode_tinyurl.Codec

public class Codec
extends Object

535 - Encode and Decode TinyURL.<p>Medium</p> <p>> Note: This is a companion problem to the <a href="https://leetcode.com/discuss/interview-question/system-design/" target="_top">System Design</a> problem: <a href="https://leetcode.com/discuss/interview-question/124658/Design-a-URL-Shortener-(-TinyURL-)-System/" target="_top">Design TinyURL</a>.</p> <p>TinyURL is a URL shortening service where you enter a URL such as <code>https://leetcode.com/problems/design-tinyurl</code> and it returns a short URL such as <code>http://tinyurl.com/4e9iAk</code>. Design a class to encode a URL and decode a tiny URL.</p> <p>There is no restriction on how your encode/decode algorithm should work. You just need to ensure that a URL can be encoded to a tiny URL and the tiny URL can be decoded to the original URL.</p> <p>Implement the <code>Solution</code> class:</p> <ul> <li><code>Solution()</code> Initializes the object of the system.</li> <li><code>String encode(String longUrl)</code> Returns a tiny URL for the given <code>longUrl</code>.</li> <li><code>String decode(String shortUrl)</code> Returns the original long URL for the given <code>shortUrl</code>. It is guaranteed that the given <code>shortUrl</code> was encoded by the same object.</li> </ul> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> url = &ldquo;https://leetcode.com/problems/design-tinyurl&rdquo;</p> <p><strong>Output:</strong> &ldquo;https://leetcode.com/problems/design-tinyurl&rdquo;</p> <p><strong>Explanation:</strong></p> <pre><code> Solution obj = new Solution(); string tiny = obj.encode(url); // returns the encoded tiny url. string ans = obj.decode(tiny); // returns the original url after deconding it. </code></pre> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= url.length <= 10⁴</code></li> <li><code>url</code> is guranteed to be a valid URL.</li> </ul>

Constructor Summary

Constructors

Constructor	Description
Codec()

Method Summary

Modifier and Type	Method	Description
String	decode(String shortUrl)
String	encode(String longUrl)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Codec

public Codec()

Method Details

encode

public String encode(String longUrl)

decode

public String decode(String shortUrl)