LeetCode Solutions | 981. Time Based Key-Value Store

LeetCode Solutions | 981. Time Based Key-Value Store | LeetCode C++ Solution

LeetCode Question: 981. Time Based Key-Value Store (Level : Medium)

Note:- Scroll horizontally to see the full line of code.

class TimeMap
{
    map<string, map<int, string>> Dictionary;

public:
    TimeMap()
    {
    }

    void set(string key, string value, int timestamp)
    {
        Dictionary[key][timestamp] = value;
    }

    string get(string key, int timestamp)
    {
        if (Dictionary.find(key) == Dictionary.end())
        {
            return "";
        }
        else
        {
            if (Dictionary[key].find(timestamp) == Dictionary[key].end())
            {
                for (auto i = Dictionary[key].rbegin(); i != Dictionary[key].rend(); ++i)
                {
                    if (i->first < timestamp)
                    {
                        return i->second;
                    }
                }
                return "";
            }
            else
            {
                return Dictionary[key][timestamp];
            }
        }
    }
};

/**
 * Your TimeMap object will be instantiated and called as such:
 * TimeMap* obj = new TimeMap();
 * obj->set(key,value,timestamp);
 * string param_2 = obj->get(key,timestamp);
 */

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