std::rotate_copy

 

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Defined in header <algorithm>
template< class ForwardIterator, class OutputIterator > OutputIterator rotate_copy( ForwardIterator first, ForwardIterator n_first,                             ForwardIterator last, OutputIterator d_first );

Copies the elements from the range [first, last), to another range beginning at d_first in such a way, that the element n_first becomes the first element of the new range and n_first - 1 becomes the last element.

Parameters

first, last	-	the range of elements to copy
n_first	-	the element to move to the beginning of the new range
d_first	-	beginning of the destination range

Return value

output iterator to the element past the last element copied.

Possible implementation

template<class ForwardIterator, class OutputIterator> OutputIterator rotate_copy(ForwardIterator first, ForwardIterator n_first, ForwardIterator last, OutputIterator d_first) { d_first = std::copy(n_first, last, d_first); return std::copy(first, n_first, d_first); }

Complexity

linear in the distance between first and last

See also

rotate	rotates the order of elements in a range (function template)