1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <algorithm>
11
12// template<class RandomAccessIterator, class UniformRandomNumberGenerator>
13//     void shuffle(RandomAccessIterator first, RandomAccessIterator last,
14//                  UniformRandomNumberGenerator& g);
15
16#include <algorithm>
17#include <random>
18#include <cassert>
19
20int main()
21{
22    int ia[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
23    int ia1[] = {2, 7, 1, 4, 3, 6, 5, 10, 9, 8};
24    int ia2[] = {1, 8, 3, 4, 6, 9, 5, 7, 2, 10};
25    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
26    std::minstd_rand g;
27    std::shuffle(ia, ia+sa, g);
28    assert(std::equal(ia, ia+sa, ia1));
29    std::shuffle(ia, ia+sa, g);
30    assert(std::equal(ia, ia+sa, ia2));
31}
32