有30个人围坐一圈，从1到30编号，从1号开始报数，报5者退出。依退出顺序输出他们的编号。

C++的：

#include <iostream>
#include <queue>

using namespace std;

int main()
{
int monkeys(0),max(0);
int count,ID;
queue<int> circle;
while (monkeys<=0||max<=0)
{
cout<<"How many monkeys:";
cin>>monkeys;
cout<<"The ones count which number can leave:";
cin>>max;
}
for (ID=1;ID<=monkeys;++ID)
circle.push(ID);

count=0;
while (circle.size()>1)
{
++count;
ID=circle.front();
circle.pop();
if (count==max) {
cout<<ID<<endl;
count=0;
}
else circle.push(ID);
}

ID=circle.front();
cout<<"The monkey marked with number "<<ID<<" will be left behind.\n";
return ID;
}

这是结果：
How many monkeys:30
The ones count which numbe