I want to move first element of vector to the end of vector.
v = {1,2,3,4} after this should be like this
v= {2,3,4,1}
my compiler version is gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
I know in Vc11 we can use std::move to move element. but how can I do this in above version of compiler?
There's a std::rotate algorithm in the standard library:
std::rotate(ObjectToRotate.begin(),
ObjectToRotate.end()-1, // this will be the new first element
ObjectToRotate.end());
As noted in the comments, std::rotate is one possible way:
std::rotate( v.begin(), v.begin() + 1, v.end() );
std::vector doesn't have a pop_front(), for a good reason. It would be quite inefficient.
You should consider using std::rotate or if you want it the ugly way: Create a function that safes the last and the first element in local variables, create a new local vector, but the last element as first in the vector. Put begin+1 till end-1 in the vector and then the first element.
std::rotate.std::movedoes not move things in that sense. Anyway, there are good examples here:std::rotate.std::dequewould be more appropriate of this.remove(v.begin(), v.end(), v.at(0))if there are no duplicates. I wouldn't do that, but... funnily enough. :)dequehas efficientpop_front()/push_front()besides the*_back()variants, only available invector.