2024每日刷题（110）

Leetcode—535. TinyURL 的加密与解密

实现代码

class Solution {
public:// Encodes a URL to a shortened URL.string encode(string longUrl) {while(!urlToCode.count(longUrl)) {string code;for(int i = 0; i < 6; i++) {code += alphabets[rand() % alphabets.size()];}if(!codeToUrl.count(code)) {urlToCode[longUrl] = code;codeToUrl[code] = longUrl;return "http://tinyurl.com/" + code;}}throw;}// Decodes a shortened URL to its original URL.string decode(string shortUrl) {return codeToUrl[shortUrl.substr(19)];}
private:const string alphabets = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";unordered_map<string, string> urlToCode;unordered_map<string, string> codeToUrl;
};// Your Solution object will be instantiated and called as such:
// Solution solution;
// solution.decode(solution.encode(url));

运行结果

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