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Bulls and cows/Player: Difference between revisions
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Score | 9 bull, 0 cow
--------+--------------------</lang>
=={{header|C++}}==
<lang cpp>
#include <iostream>
#include <sstream>
#include <iomanip>
#include <algorithm>
#include <vector>
#include <time.h>
//--------------------------------------------------------------------------------------------------
using namespace std;
//--------------------------------------------------------------------------------------------------
const unsigned int LEN = 4;
//--------------------------------------------------------------------------------------------------
class CowsAndBulls_Player
{
public:
CowsAndBulls_Player() { fillPool(); }
void play() { secret = createSecret(); guess(); }
private:
void guess()
{
pair<int, int> res; int cc = 1;
cout << endl << " SECRET: " << secret << endl << "==============" << endl;
cout << "+-----------+---------+--------+\n| GUESS | BULLS | COWS |\n+-----------+---------+--------+\n";
while( true )
{
string gs = gimmeANumber();
if( gs.empty() ) { cout << endl << "Something went wrong with the scoring..." << endl << "Cannot find an answer!" << endl; return; }
if( scoreIt( gs, res ) ) { cout << endl << "I found the secret number!" << endl << "It is: " << gs << endl; return; }
cout << "| " << gs << " | " << setw( 3 ) << res.first << " | " << setw( 3 ) << res.second << " |\n+-----------+---------+--------+\n";
clearThisScore( gs, res );
}
}
void clearThisScore( string gs, pair<int, int>& r )
{
vector<string>::iterator pi = pool.begin();
while( pi != pool.end() )
{
if( removeIt( gs, ( *pi ), r ) ) pi = pool.erase( pi );
else pi++;
}
}
string gimmeANumber()
{
if( pool.empty() ) return "";
return pool[rand() % pool.size()];
}
void fillPool()
{
for( int x = 1234; x < 9877; x++ )
{
ostringstream oss; oss << x;
if( check( oss.str() ) ) pool.push_back( oss.str() );
}
}
bool check( string s )
{
for( string::iterator si = s.begin(); si != s.end(); si++ )
{
if( ( *si ) == '0' ) return false;
if( count( s.begin(), s.end(), ( *si ) ) > 1 ) return false;
}
return true;
}
bool removeIt( string gs, string ts, pair<int, int>& res )
{
pair<int, int> tp; getScore( gs, ts, tp );
return tp != res;
}
bool scoreIt( string gs, pair<int, int>& res )
{
getScore( gs, secret, res );
return res.first == LEN;
}
void getScore( string gs, string st, pair<int, int>& pr )
{
pr.first = pr.second = 0;
for( unsigned int ui = 0; ui < LEN; ui++ )
{
if( gs[ui] == st[ui] ) pr.first++;
else
{
for( unsigned int vi = 0; vi < LEN; vi++ )
if( gs[ui] == st[vi] ) pr.second++;
}
}
}
string createSecret()
{
string n = "123456789", rs = "";
while( rs.length() < LEN )
{
int r = rand() % n.length();
rs += n[r]; n.erase( r, 1 );
}
return rs;
}
string secret;
vector<string> pool;
};
//--------------------------------------------------------------------------------------------------
int main( int argc, char* argv[] )
{
srand( static_cast<unsigned int>( time( NULL ) ) ); CowsAndBulls_Player cb;
cb.play(); cout << endl << endl;
return system( "pause" );
}
//--------------------------------------------------------------------------------------------------
</lang>
Output:
<pre>
SECRET: 6281
==============
+-----------+---------+--------+
| GUESS | BULLS | COWS |
+-----------+---------+--------+
| 5132 | 0 | 2 |
+-----------+---------+--------+
| 1568 | 0 | 3 |
+-----------+---------+--------+
| 2685 | 1 | 2 |
+-----------+---------+--------+
| 2816 | 0 | 4 |
+-----------+---------+--------+
I found the secret number!
It is: 6281
</pre>
=={{header|C sharp|C#}}==
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