38 lines
914 B
Python
38 lines
914 B
Python
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# NOTE: This one is an open-ended question, and relevant to system design. Refer
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# the notes.
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import string
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import random
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class Codec:
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store = {}
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base = 'https://tiny.url/'
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def encode(self, longUrl: str) -> str:
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"""Encodes a URL to a shortened URL.
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"""
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tiny = None
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while True:
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tiny = ''.join(random.choices(string.ascii_letters + string.digits, k = 5))
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if tiny not in self.store:
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break
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self.store[tiny] = longUrl
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return f'{self.base}{tiny}'
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def decode(self, shortUrl: str) -> str:
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"""Decodes a shortened URL to its original URL.
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"""
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_, tiny = shortUrl.split(self.base)
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return self.store[tiny]
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# Your Codec object will be instantiated and called as such:
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# codec = Codec()
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# codec.decode(codec.encode(url))
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