48 lines
1.7 KiB
C++
48 lines
1.7 KiB
C++
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SeparateChaining.h - Header file for separate chaining
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#ifndef SEPARATE_CHAINING_H_
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#define SEPARATE_CHAINING_H_
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#include "vector.h"
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#include "mystring.h"
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#include "LinkedList.h"
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// SeparateChaining Hash table class
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//
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// CONSTRUCTION: an initialization for ITEM_NOT_FOUND
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// and an approximate initial size or default of 101
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//
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// ******************PUBLIC OPERATIONS*********************
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// void insert( x ) --> Insert x
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// void remove( x ) --> Remove x
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// Hashable find( x ) --> Return item that matches x
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// void makeEmpty( ) --> Remove all items
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// int hash( string str, int tableSize )
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// --> Global method to hash strings
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template <class HashedObj>
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class HashTable
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{
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public:
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explicit HashTable( const HashedObj & notFound, int size = 101 );
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HashTable( const HashTable & rhs )
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: ITEM_NOT_FOUND( rhs.ITEM_NOT_FOUND ), theLists( rhs.theLists ) { }
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const HashedObj & find( const HashedObj & x ) const;
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void makeEmpty( );
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void insert( const HashedObj & x );
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void remove( const HashedObj & x );
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const HashTable & operator=( const HashTable & rhs );
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private:
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vector<List<HashedObj> > theLists; // The array of Lists
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const HashedObj ITEM_NOT_FOUND;
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};
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int hash( const string & key, int tableSize );
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int hash( int key, int tableSize );
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#include "SeparateChaining.cpp"
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#endif
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