thrust::shuffle_copy

Defined in thrust/shuffle.h

template<typename DerivedPolicy, typename RandomIterator, typename OutputIterator, typename URBG> void thrust::shuffle_copy(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, RandomIterator first, RandomIterator last, OutputIterator result, URBG &&g)

shuffle_copy differs from shuffle only in that the reordered sequence is written to different output sequences, rather than in place. shuffle_copy reorders the elements [first, last) by a uniform pseudorandom permutation, defined by random engine g.

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

The following code snippet demonstrates how to use shuffle_copy to create a random permutation.

#include <thrust/shuffle.h>
#include <thrust/random.h>
#include <thrust/execution_policy.h>
int A[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
int result[10];
const int N = sizeof(A)/sizeof(int);
thrust::default_random_engine g;
thrust::shuffle_copy(thrust::host, A, A + N, result, g);
// result is now {6, 5, 8, 7, 2, 1, 4, 3, 10, 9}