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<RandomAccessIterator Iter>
13 //   requires ShuffleIterator<Iter> && LessThanComparable<Iter::value_type>
14 //   void
15 //   sort_heap(Iter first, Iter last);
16 
17 #include <algorithm>
18 #include <cassert>
19 
test(unsigned N)20 void test(unsigned N)
21 {
22     int* ia = new int [N];
23     for (int i = 0; i < N; ++i)
24         ia[i] = i;
25     std::random_shuffle(ia, ia+N);
26     std::make_heap(ia, ia+N);
27     std::sort_heap(ia, ia+N);
28     assert(std::is_sorted(ia, ia+N));
29     delete [] ia;
30 }
31 
main()32 int main()
33 {
34     test(0);
35     test(1);
36     test(2);
37     test(3);
38     test(10);
39     test(1000);
40 }
41