C++中vector与remove()函数详解

// 首先，定义一个vector
vector<int> demo = {1,3,3,4,3,5,6};

// 调用remove函数
vector<int>:: iterator demo_return = remove(demo.begin(), demo.end(), 3);

cout << "remove() return:" <<endl;
for(auto iter = demo_return; iter != demo_return.end(); ++iter){
        cout << *iter << ' ';
    }
cout << endl;
cout << "after remove():" << endl;
for(auto iter = demo.begin(); iter != demo.end(); ++iter){
        cout << *iter << ' ';
}

remove(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
    __first = _VSTD::find(__first, __last, __value_);
    if (__first != __last)
    {
        _ForwardIterator __i = __first;
        while (++__i != __last)
        {
            if (!(*__i == __value_))
            {
                *__first = _VSTD::move(*__i);
                ++__first;
            }
        }
    }
    return __first;
}