29 lines
1.5 KiB
Markdown
29 lines
1.5 KiB
Markdown
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> Note: This is a companion problem to the [System Design](https://leetcode.com/discuss/interview-question/system-design/) problem: [Design TinyURL](https://leetcode.com/discuss/interview-question/124658/Design-a-URL-Shortener-(-TinyURL-)-System/).
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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.
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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.
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Implement the `Solution` class:
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* `Solution()` Initializes the object of the system.
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* `String encode(String longUrl)` Returns a tiny URL for the given `longUrl`.
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* `String decode(String shortUrl)` Returns the original long URL for the given `shortUrl`. It is guaranteed that the given `shortUrl` was encoded by the same object.
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**Example 1:**
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Input: url = "https://leetcode.com/problems/design-tinyurl"
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Output: "https://leetcode.com/problems/design-tinyurl"
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Explanation:
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Solution obj = new Solution();
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string tiny = obj.encode(url); // returns the encoded tiny url.
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string ans = obj.decode(tiny); // returns the original url after deconding it.
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**Constraints:**
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* `1 <= url.length <= 104`
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* `url` is guranteed to be a valid URL.
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https://leetcode.com/problems/encode-and-decode-tinyurl
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