Note: This is a companion problem to the System Design problem: Design TinyURL.
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 givenlongUrl
. -
String decode(String shortUrl)
Returns the original long URL for the givenshortUrl
. It is guaranteed that the givenshortUrl
was encoded by the same object.
Example 1:
Input: url = "https://leetcode.com/problems/design-tinyurl"
Output: "https://leetcode.com/problems/design-tinyurl"
Explanation:
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.
Constraints:
-
1 <= url.length <= 104
-
url
is guranteed to be a valid URL.
SOLUTION:
class Codec:
def encode(self, longUrl: str) -> str:
return longUrl
def decode(self, shortUrl: str) -> str:
return shortUrl
# Your Codec object will be instantiated and called as such:
# codec = Codec()
# codec.decode(codec.encode(url))
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