- Learned how to use
random().toString(36)to generate random strings.
36-basesystem use all
A-Z, which is quite useful.
TinyURL is a URL shortening service where you enter a URL such as https://leetcode.com/problems/design-tinyurl and it returns a short URL such as http://tinyurl.com/4e9iAk. Design a class to encode a URL and decode a tiny URL.
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.
Implement the Solution class:
Solution()Initializes the object of the system.
String encode(String longUrl)Returns a tiny URL for the given
String decode(String shortUrl)Returns the original long URL for the given shortUrl. It is guaranteed that the given
shortUrlwas encoded by the same object.
Input: url = "https://leetcode.com/problems/design-tinyurl"