thrust

◆ sort() [3/4]

template<typename DerivedPolicy , typename RandomAccessIterator , typename StrictWeakOrdering >
__host__ __device__ void thrust::sort ( const thrust::detail::execution_policy_base< DerivedPolicy > &  exec,
RandomAccessIterator  first,
RandomAccessIterator  last,
StrictWeakOrdering  comp 
)

sort sorts the elements in [first, last) into ascending order, meaning that if i and j are any two valid iterators in [first, last) such that i precedes j, then *j is not less than *i. Note: sort is not guaranteed to be stable. That is, suppose that *i and *j are equivalent: neither one is less than the other. It is not guaranteed that the relative order of these two elements will be preserved by sort.

This version of sort compares objects using a function object comp.

The algorithm's execution is parallelized as determined by exec.

Parameters
execThe execution policy to use for parallelization.
firstThe beginning of the sequence.
lastThe end of the sequence.
compComparison operator.
Template Parameters
DerivedPolicyThe name of the derived execution policy.
RandomAccessIteratoris a model of Random Access Iterator, RandomAccessIterator is mutable, and RandomAccessIterator's value_type is convertible to StrictWeakOrdering's first_argument_type and second_argument_type.
StrictWeakOrderingis a model of Strict Weak Ordering.

The following code demonstrates how to sort integers in descending order using the greater<int> comparison operator using the thrust::host execution policy for parallelization:

#include <thrust/sort.h>
...
const int N = 6;
int A[N] = {1, 4, 2, 8, 5, 7};
// A is now {8, 7, 5, 4, 2, 1};
See also
http://www.sgi.com/tech/stl/sort.html
stable_sort
sort_by_key