535. Encode and Decode TinyURL

gistfile1.txt

import java.util.HashMap;
import java.util.Map;

public class Codec {

	// Encodes a URL to a shortened URL.
	private final static String prefix = "http://tinyurl.com/";
	public static Map<String, String> map = new HashMap<>();
    public String encode(String longUrl) {
    	Integer hashcode = longUrl.hashCode();
    	System.out.println(hashcode);
    	String hexStr = Integer.toHexString(hashcode);
    	System.out.println(hexStr);
    	String shortUrl = prefix+hexStr;
    	map.put(shortUrl, longUrl);
        
        return shortUrl;
    }

    // Decodes a shortened URL to its original URL.
    public String decode(String shortUrl) {
    	
        return map.get(shortUrl);
    }
    
	public static void main(String[] args) {
		new Codec().encode("https://leetcode.com/problems/design-tinyurl");
		new Codec().decode("https://tinyurl.com/design-tinyurl");
	}

}