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HybridTable.h
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HybridTable.h
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#ifndef HYBRIDTABLE_H_
#define HYBRIDTABLE_H_
#include <string>
using std::string;
class Node {
int index_; // index of this node
int val_; // value corresponding to this index
Node* next_; // pointer to next node in the list
// even constructors are private!
// so only HybridTable can access them
// Constructor initialising the node with an index and its
// corresponding value, with the next_ pointer set to nullptr
Node(int index, int val);
// Constructor initialising the node with an index, its
// corresponding value, and the next node pointer
Node(int index, int val, Node* next);
// Destructor
~Node();
friend class HybridTable; // allow HybridTable to access private members
};
class HybridTable {
public:
// Constructor. Constructs an empty HybridTable with array part of
// size INITIAL_ARRAY_SIZE, and empty list part.
// All entries in the array part initialised to 0.
HybridTable();
// Parameterised constructor. Constructs a HybridTable with array
// part of size n, and an empty list part.
// arr is assumed to have size n, and the entries in the array part
// are initialised with arr[0] to arr[n-1].
HybridTable(const int* arr, int n);
// Destructor. It should release all memory used by this HybridTable.
~HybridTable();
// Copy constructor.
HybridTable(const HybridTable& other);
// Copy assignment operator.
HybridTable& operator=(const HybridTable& other);
// Returns the value corresponding to index i.
// If index i is not present in the HybridTable, return 0.
int get(int i) const;
// Sets the value corresponding to index i to val.
// Resizing of the array part, if required, should also happen here.
void set(int i, int val);
// Returns a string representation of the HybridTable, as described
// in the assignment webpage.
// Note that it does not actually print anything to the screen.
// To pass the test cases you must make sure that even the
// white spaces are correct.
string toString() const;
// Returns the number of entries of the array part. In other words,
// the array part indices are [0..getArraySize()-1].
int getArraySize() const;
// Returns the total number of elements in the array part and
// the list part.
int getTotalSize() const;
// We didn't explain what static and constexpr are, but you can just
// use them in HybridTable.cpp just like normal constants
// DO NOT CHANGE, MOVE OR REMOVE IT
static constexpr int INITIAL_ARRAY_SIZE = 4; // default array part size
private:
int* array_; // pointer to array part
Node* list_; // pointer to head of list part
int arraySize; // size of array
int listSize; // size of list
// add other member variables if required
// add other member functions if required
};
#endif /* HYBRIDTABLE_H_ */