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encode_decode_tinyurl.py

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import base64

# link: https://leetcode.com/problems/encode-and-decode-tinyurl/

class Codec:

def __init__(self):

self.urls = {}

self.URL_BASE = "http://tinyurl.com/"

def encode(self, longUrl):

urlEnc = longUrl.encode('ascii')

url64Enc = base64.b64encode(urlEnc)

url64Dec = url64Enc.decode('ascii')

self.urls[url64Dec] = longUrl

return self.URL_BASE + url64Dec

def decode(self, shortUrl: str) -> str:

urlSplited = shortUrl.split('/', 3)

urlDecoded = self.urls[urlSplited[-1]]

return urlDecoded