Template Function thrust::unique(ForwardIterator, ForwardIterator)¶
Function Documentation¶
-
template<typename
ForwardIterator
>
ForwardIteratorthrust
::
unique
(ForwardIterator first, ForwardIterator last) For each group of consecutive elements in the range
[first, last)
with the same value,unique
removes all but the first element of the group. The return value is an iteratornew_last
such that no two consecutive elements in the range[first, new_last)
are equal. The iterators in the range[new_last, last)
are all still dereferenceable, but the elements that they point to are unspecified.unique
is stable, meaning that the relative order of elements that are not removed is unchanged.This version of
unique
usesoperator==
to test for equality.The following code snippet demonstrates how to use
unique
to compact a sequence of numbers to remove consecutive duplicates.- Return
The end of the unique range
[first, new_last)
.- Parameters
first
: The beginning of the input range.last
: The end of the input range.
- Template Parameters
ForwardIterator
: is a model of Forward Iterator, andForwardIterator
is mutable, andForwardIterator's
value_type
is a model of Equality Comparable.
#include <thrust/unique.h> ... const int N = 7; int A[N] = {1, 3, 3, 3, 2, 2, 1}; int *new_end = thrust::unique(A, A + N); // The first four values of A are now {1, 3, 2, 1} // Values beyond new_end are unspecified.
- See
- See
unique_copy