I need the code in C++ using a singly linked list.
typedef std::string KeyType;typedef double ValueType;class Map{ public: Map(); // Create an empty map (i.e., one with no key/value pairs) bool empty() const; // Return true if the map is empty, otherwise false. int size() const; // Return the number of key/value pairs in the map. bool insert(const KeyType& key, const ValueType& value); // If key is not
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