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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <algorithm>
// template<RandomAccessIterator Iter>
// requires ShuffleIterator<Iter> && LessThanComparable<Iter::value_type>
// void
// pop_heap(Iter first, Iter last);
#include <algorithm>
#include <random>
#include <cassert>
std::mt19937 randomness;
void test(int N)
{
int* ia = new int [N];
for (int i = 0; i < N; ++i)
ia[i] = i;
std::shuffle(ia, ia+N, randomness);
std::make_heap(ia, ia+N);
for (int i = N; i > 0; --i)
{
std::pop_heap(ia, ia+i);
assert(std::is_heap(ia, ia+i-1));
}
std::pop_heap(ia, ia);
delete [] ia;
}
int main()
{
test(1000);
}
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