Mega Code Archive
Accessing a Containers Elements in Reverse
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#include <algorithm>
#include <fstream>
#include <functional>
#include <iostream>
#include <iterator>
#include <list>
using namespace std;
template <class ForwIter>
void print(ForwIter first, ForwIter last, const char* title)
{
cout << title << endl;
while ( first != last)
cout << *first++ << '\t';
cout << endl;
}
class Card
{
public:
enum Suit { spades, clubs, hearts, diamonds };
Card( int value = 1, Suit suit = spades );
// value - 1 = Ace, 2-10, 11 = Jack, 12 = Queen, 13 = King
bool operator<( const Card& rhs ) const;
void print() const;
int suit() const;
int value() const;
private:
int value_;
Suit suit_;
};
inline
Card::Card( int value, Suit suit )
: value_( value ), suit_( suit )
{} // empty
inline
bool Card::operator<( const Card& rhs ) const
{ return value() < rhs.value(); }
void Card::print() const
{
if( value() >= 2 && value() <= 10 )
cout << value();
else
switch( value() )
{
case 1: cout << "Ace"; break;
case 11: cout << "Jack"; break;
case 12: cout << "Queen"; break;
case 13: cout << "King"; break;
};
cout << " of ";
switch( suit() )
{
case spades: cout << "spades"; break;
case clubs: cout << "clubs"; break;
case diamonds: cout << "diamonds"; break;
case hearts: cout << "hearts"; break;
default: cout << "unknown suit"; break;
}
cout << endl;
}
inline
int Card::suit() const
{ return suit_; }
inline
int Card::value() const
{ return value_; }
int main( )
{
list<Card> hand;
hand.push_back( Card( 12, Card::hearts ) );
hand.push_back( Card( 6, Card::clubs ) );
hand.push_back( Card( 12, Card::diamonds ) );
hand.push_back( Card( 1, Card::spades ) );
hand.push_back( Card( 11, Card::clubs ) );
hand.sort();
for_each( hand.begin(), hand.end(), mem_fun_ref( &Card::print ) );
for_each( hand.rbegin(), hand.rend(), mem_fun_ref( &Card::print ) );
}
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