关于random_shuffle()函数生成不重复随即数的问题需要在一个文件内洗200次牌，但是用random_shuffle()函数
关于random_shuffle()函数生成不重复随即数的问题
需要在一个文件内洗200次牌，但是用random_shuffle()函数返回的值有时候是重复的，不知道程序那里出问题了，请各位大侠帮助看下程序那里有问题！
char *s16[MAX]={
"0x01","0x02","0x03","0x04","0x05","0x06","0x07","0x08","0x09","0x0A","0x0B","0x0C","0x0D",
"0x11","0x12","0x13","0x14","0x15","0x16","0x17","0x18","0x19","0x1A","0x1B","0x1C","0x1D",
"0x21","0x22","0x23","0x24","0x25","0x26","0x27","0x28","0x29","0x2A","0x2B","0x2C","0x2D",
"0x31","0x32","0x33","0x34","0x35","0x36","0x37","0x38","0x39","0x3A","0x3B","0x3C","0x3D","0x4E","0x4F" };
class MyRand
{
public:
int operator()(int index)
{
return rand() % POKER_NUM;
}
};
int xipai_test()
{
int a,c;
int min = 1;
int max = 2;
cout <<"请输入[起始]文件编号："<<endl;
cin >>min;
cout <<"请输入[结束]文件编号："<<endl;
cin >>max;
// 用时间创建目录
char dir[64];
SYSTEMTIME sys;
GetLocalTime( &sys );
sprintf(dir,"%d_%d_%d_%d_%d_%d_%d",sys.wYear ,sys.wMonth ,sys.wDay ,sys.wHour ,sys.wSecond ,sys.wMinute ,sys.wMilliseconds);
_mkdir(dir);
srand( (unsigned)time(NULL) ); //设置随即数生成器的种子
vector<int> poker; //一副牌,牌点数从 1 计
for(c=min;c<=max;c++)
{
ofstream out;
char buffer [256] ;
strcpy(buffer,dir);
char buffer2 [128] ;
sprintf(buffer2,"/moto%d.ini",c);
strcat(buffer,buffer2);
cout <<"buffer："<<buffer<<endl;
out.open(buffer);
//初始化
for (int num = 1; num <= POKER_NUM; num++)
{
poker.push_back(num);
}
for (int w = 1; w <= 200; w++)
{
out<<"[Table"<<w<<"]"<<endl;
//用默认随机数洗一遍
//random_shuffle(poker.begin(), poker.end());
//for_each(poker.begin(), poker.end(), print_poker);
//cout << endl;
Sleep(1);
//用自定义随机数再洗一遍
random_shuffle(poker.begin(), poker.end(), MyRand());
//copy(poker.begin(), poker.end(), ostream_iterator<int>(cout, " "));
//cout << endl<< endl;
for (int num = 0; num < POKER_NUM; num++)
{
int idx =poker.at(num);
if (idx && idx >= 0 && idx < 54)
out<<"readBuffer"<<num+1<<"="<<s16[idx-1]<<endl; //输出16进制
}
}
out.close();
}
return 1;
}
[解决办法]1、检查一下POKER_NUM和MAX是否不匹配；
2、检查一下for (int num = 1; num <= POKER_NUM; num++)和for (int num = 0; num < POKER_NUM; num++)是否不一致。
