programming-examples/c++/Others/BinaryHeap.h - Header file for binary heap.cpp
2019-11-15 12:59:38 +01:00

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BinaryHeap.h - Header file for binary heap
#ifndef BINARY_HEAP_H_
#define BINARY_HEAP_H_
#include "dsexceptions.h"
#include "vector.h"
// BinaryHeap class
//
// CONSTRUCTION: with an optional capacity (that defaults to 100)
//
// ******************PUBLIC OPERATIONS*********************
// void insert( x ) --> Insert x
// deleteMin( minItem ) --> Remove (and optionally return) smallest item
// Comparable findMin( ) --> Return smallest item
// bool isEmpty( ) --> Return true if empty; else false
// bool isFull( ) --> Return true if full; else false
// void makeEmpty( ) --> Remove all items
// ******************ERRORS********************************
// Throws Underflow and Overflow as warranted
template <class Comparable>
class BinaryHeap
{
public:
explicit BinaryHeap( int capacity = 100 );
bool isEmpty( ) const;
bool isFull( ) const;
const Comparable & findMin( ) const;
void insert( const Comparable & x );
void deleteMin( );
void deleteMin( Comparable & minItem );
void makeEmpty( );
private:
int currentSize; // Number of elements in heap
vector<Comparable> array; // The heap array
void buildHeap( );
void percolateDown( int hole );
};
#include "BinaryHeap.cpp"
#endif