0535-encode-and-decode-tinyurl.cpp

/*
535. Encode and Decode TinyURL

Submitted: March 6, 2025

Runtime: 7 ms (beats 21.56%)
Memory: 10.05 MB (beats 52.16%)
*/

class Solution {
    vector<string> v;

public:
    // Encodes a URL to a shortened URL.
    string encode(string longUrl) {
        v.push_back(longUrl);
        return to_string(v.size() - 1);
    }

    // Decodes a shortened URL to its original URL.
    string decode(string shortUrl) {
        return v[stoi(shortUrl)];
    }
};

// Your Solution object will be instantiated and called as such:
// Solution solution;
// solution.decode(solution.encode(url));