//文件名：CHAPTER5-6.cpp
#include <iostream>
#include <deque>
using namespace std;
int main()
{
	deque<float> coll; // deque 容器 for floating-point elements
	// insert elements from 1.1 to 6.6 each at the front
	for (int i=1; i<=6; ++i) 
	{	coll.push_front(i*1.1); // insert at the front
		// print all elements followed by a space
		for (int i=0; i<coll.size(); ++i) {cout << coll[i] << ' ';	}
		cout << endl;
	}
	return 1;
}