74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
#include <iostream>
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#include <sstream>
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#include <algorithm>
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#include <vector>
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using namespace std;
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class poker
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{
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public:
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poker() { face = "A23456789TJQK"; suit = "SHCD"; }
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string analyze( string h )
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{
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memset( faceCnt, 0, 13 ); memset( suitCnt, 0, 4 ); vector<string> hand;
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transform( h.begin(), h.end(), h.begin(), toupper ); istringstream i( h );
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copy( istream_iterator<string>( i ), istream_iterator<string>(), back_inserter<vector<string> >( hand ) );
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if( hand.size() != 5 ) return "invalid hand."; vector<string>::iterator it = hand.begin();
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sort( it, hand.end() ); if( hand.end() != adjacent_find( it, hand.end() ) ) return "invalid hand.";
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while( it != hand.end() )
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{
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if( ( *it ).length() != 2 ) return "invalid hand.";
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int n = face.find( ( *it ).at( 0 ) ), l = suit.find( ( *it ).at( 1 ) );
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if( n < 0 || l < 0 ) return "invalid hand.";
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faceCnt[n]++; suitCnt[l]++; it++;
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}
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cout << h << ": "; return analyzeHand();
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}
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private:
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string analyzeHand()
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{
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bool p1 = false, p2 = false, t = false, f = false, fl = false, st = false;
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for( int x = 0; x < 13; x++ )
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switch( faceCnt[x] )
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{
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case 2: if( p1 ) p2 = true; else p1 = true; break;
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case 3: t = true; break;
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case 4: f = true;
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}
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for( int x = 0; x < 4; x++ )if( suitCnt[x] == 5 ){ fl = true; break; }
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if( !p1 && !p2 && !t && !f )
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{
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int s = 0;
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for( int x = 0; x < 13; x++ )
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{
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if( faceCnt[x] ) s++; else s = 0;
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if( s == 5 ) break;
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}
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st = ( s == 5 ) || ( s == 4 && faceCnt[0] && !faceCnt[1] );
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}
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if( st && fl ) return "straight-flush";
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else if( f ) return "four-of-a-kind";
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else if( p1 && t ) return "full-house";
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else if( fl ) return "flush";
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else if( st ) return "straight";
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else if( t ) return "three-of-a-kind";
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else if( p1 && p2 ) return "two-pair";
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else if( p1 ) return "one-pair";
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return "high-card";
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}
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string face, suit;
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unsigned char faceCnt[13], suitCnt[4];
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};
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int main( int argc, char* argv[] )
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{
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poker p;
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cout << p.analyze( "2h 2d 2s ks qd" ) << endl; cout << p.analyze( "2h 5h 7d 8s 9d" ) << endl;
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cout << p.analyze( "ah 2d 3s 4s 5s" ) << endl; cout << p.analyze( "2h 3h 2d 3s 3d" ) << endl;
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cout << p.analyze( "2h 7h 2d 3s 3d" ) << endl; cout << p.analyze( "2h 7h 7d 7s 7c" ) << endl;
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cout << p.analyze( "th jh qh kh ah" ) << endl; cout << p.analyze( "4h 4c kc 5d tc" ) << endl;
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cout << p.analyze( "qc tc 7c 6c 4c" ) << endl << endl; return system( "pause" );
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}
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