ex9_34.cpp

//
//  ex9_32.cpp
//  Exercise 9.32 
//
//  Created by pezy on 12/3/14.
//
//  @Brief  Assuming vi is a container of ints that includes even and odd values, 
//          predict the behavior of the following loop. 
//          After you've analyzed this loop, write a program to test whether your expectations were correct.
//			
//			iter = vi.begin(); 
//			while (iter != vi.end())    
//				if (*iter % 2)        
//					iter = vi.insert(iter, *iter);    
//				++iter; 
//
//  @Answer "infinite loop". Becasue the `++iter` is outside of the scope of the `while` loop.
//          Fixed as following.
//
//  Refactored by Yue Wang Oct, 2015
//


#include <iostream>
#include <vector>

using std::cout;
using std::endl;
using std::vector;

int main()
{
    vector<int> data { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
    for(auto cur = data.begin(); cur != data.end(); ++cur)
        if(*cur & 0x1)
            cur = data.insert(cur, *cur), ++cur;
    
    for (auto i : data)
        cout << i << " ";

    return 0;
}