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