535. Encode and Decode TinyURL

guyy_moon

于 2018-06-10 20:33:26 发布

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分类专栏： Leetcode

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class Solution {
public:
    vector<string> res;
    // Encodes a URL to a shortened URL.
    string encode(string longUrl) {
        res.push_back(longUrl);
        return "http://tinyurl.com/"+to_string(res.size()-1);
    }

    // Decodes a shortened URL to its original URL.
    string decode(string shortUrl) {
        int index=shortUrl.find_last_of('/');
        string temp=shortUrl.substr(index+1);
        return res[stoi(temp)]; //stoi--string to int
    }
};