{ "data": { "question": { "questionId": "535", "questionFrontendId": "535", "boundTopicId": null, "title": "Encode and Decode TinyURL", "titleSlug": "encode-and-decode-tinyurl", "content": "
Note: This is a companion problem to the System Design problem: Design TinyURL.
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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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Example 1:

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\nInput: url = "https://leetcode.com/problems/design-tinyurl"\nOutput: "https://leetcode.com/problems/design-tinyurl"\n\nExplanation:\nSolution obj = new Solution();\nstring tiny = obj.encode(url); // returns the encoded tiny url.\nstring ans = obj.decode(tiny); // returns the original url after decoding it.\n
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Constraints:

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{\n \n }\n};\n\n// Your Solution object will be instantiated and called as such:\n// Solution solution;\n// solution.decode(solution.encode(url));", "__typename": "CodeSnippetNode" }, { "lang": "Java", "langSlug": "java", "code": "public class Codec {\n\n // Encodes a URL to a shortened URL.\n public String encode(String longUrl) {\n \n }\n\n // Decodes a shortened URL to its original URL.\n public String decode(String shortUrl) {\n \n }\n}\n\n// Your Codec object will be instantiated and called as such:\n// Codec codec = new Codec();\n// codec.decode(codec.encode(url));", "__typename": "CodeSnippetNode" }, { "lang": "Python", "langSlug": "python", "code": "class Codec:\n\n def encode(self, longUrl):\n \"\"\"Encodes a URL to a shortened URL.\n \n :type longUrl: str\n :rtype: str\n \"\"\"\n \n\n def decode(self, shortUrl):\n \"\"\"Decodes a shortened URL to its original URL.\n \n :type shortUrl: str\n :rtype: str\n \"\"\"\n \n\n# Your Codec object will be instantiated and called as 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longUrl) {\n \n }\n\n // Decodes a shortened URL to its original URL.\n public string decode(string shortUrl) {\n \n }\n}\n\n// Your Codec object will be instantiated and called as such:\n// Codec codec = new Codec();\n// codec.decode(codec.encode(url));", "__typename": "CodeSnippetNode" }, { "lang": "JavaScript", "langSlug": "javascript", "code": "/**\n * Encodes a URL to a shortened URL.\n *\n * @param {string} longUrl\n * @return {string}\n */\nvar encode = function(longUrl) {\n \n};\n\n/**\n * Decodes a shortened URL to its original URL.\n *\n * @param {string} shortUrl\n * @return {string}\n */\nvar decode = function(shortUrl) {\n \n};\n\n/**\n * Your functions will be called as such:\n * decode(encode(url));\n */", "__typename": "CodeSnippetNode" }, { "lang": "TypeScript", "langSlug": "typescript", "code": "/**\n * Encodes a URL to a shortened URL.\n */\nfunction encode(longUrl: string): string {\n\t\n};\n\n/**\n * Decodes a shortened URL to its original URL.\n */\nfunction decode(shortUrl: string): string {\n\t\n};\n\n/**\n * Your functions will be called as such:\n * decode(encode(strs));\n */", "__typename": "CodeSnippetNode" }, { "lang": "PHP", "langSlug": "php", "code": "class Codec {\n /**\n * Encodes a URL to a shortened URL.\n * @param String $longUrl\n * @return String\n */\n function encode($longUrl) {\n \n }\n \n /**\n * Decodes a shortened URL to its original URL.\n * @param String $shortUrl\n * @return String\n */\n function decode($shortUrl) {\n \n }\n}\n\n/**\n * Your Codec object will be instantiated and called as such:\n * $obj = Codec();\n * $s = $obj->encode($longUrl);\n * $ans = $obj->decode($s);\n */", "__typename": "CodeSnippetNode" }, { "lang": "Swift", "langSlug": "swift", "code": "class Codec {\n // Encodes a URL to a shortened URL.\n func encode(_ longUrl: String) -> String {\n \n }\n \n // Decodes a shortened URL to its original URL.\n func decode(_ shortUrl: String) -> String {\n \n }\n}\n\n/**\n * Your Codec object will be instantiated and called as such:\n * let obj = Codec()\n * val s = obj.encode(longUrl)\n * let ans = obj.decode(s)\n*/", "__typename": "CodeSnippetNode" }, { "lang": "Kotlin", "langSlug": "kotlin", "code": "class Codec() {\n // Encodes a URL to a shortened URL.\n fun encode(longUrl: String): String {\n \n }\n\n // Decodes a shortened URL to its original URL.\n fun decode(shortUrl: String): String {\n \n }\n}\n\n/**\n * Your Codec object will be instantiated and called as such:\n * var obj = Codec()\n * var url = obj.encode(longUrl)\n * var ans = obj.decode(url)\n */", "__typename": "CodeSnippetNode" }, { "lang": "Go", "langSlug": "golang", "code": "type Codec struct {\n \n}\n\n\nfunc Constructor() Codec {\n \n}\n\n// Encodes a URL to a shortened URL.\nfunc (this *Codec) encode(longUrl string) string {\n\t\n}\n\n// Decodes a shortened URL to its original URL.\nfunc (this *Codec) decode(shortUrl string) string {\n \n}\n\n\n/**\n * Your Codec object will be instantiated and called as 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