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// { dg-options "-std=gnu++0x" }

// { dg-require-cstdint "" }

// 2010-03-19  Paolo Carlini  <paolo.carlini@oracle.com>

// Copyright (C) 2010 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 3, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING3.  If not see

// <http://www.gnu.org/licenses/>.

#include <algorithm>

#include <random>

#include <vector>

#include <testsuite_hooks.h>

void test01()

{

  bool test __attribute__((unused)) = true;

  for (unsigned size = 0; size < 50; ++size)

    {

      std::vector<int> vref(size);

      std::iota(vref.begin(), vref.end(), 0);

      std::vector<int> v1(vref), v2(vref);

      std::ranlux48_base g1(size), g2(size + 1);

      std::shuffle(v1.begin(), v1.end(), g1);

      std::shuffle(v2.begin(), v2.end(), g2);

      if (size >= 10)

        {

          VERIFY( !std::equal(v1.begin(), v1.end(), vref.begin()) );

          VERIFY( !std::equal(v2.begin(), v2.end(), vref.begin()) );

          VERIFY( !std::equal(v1.begin(), v1.end(), v2.begin()) );

        }

      for (unsigned ind = 0; ind < size; ++ind)

        {

          auto it1 = std::find(v1.begin(), v1.end(), vref[ind]);

          auto it2 = std::find(v2.begin(), v2.end(), vref[ind]);

          VERIFY( it1 != v1.end() );

          VERIFY( it2 != v2.end() );

          v1.erase(it1);

          v2.erase(it2);

        }

      VERIFY( v1.empty() );

      VERIFY( v2.empty() );

    }

}

int main()

{

  test01();

  return 0;

}