testAvl.C

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/* Aleph-w
 
     / \  | | ___ _ __ | |__      __      __
    / _ \ | |/ _ \ '_ \| '_ \ ____\ \ /\ / / Data structures & Algorithms
   / ___ \| |  __/ |_) | | | |_____\ V  V /  version 1.9c
  /_/   \_\_|\___| .__/|_| |_|      \_/\_/   https://github.com/lrleon/Aleph-w
                 |_|         
 
  This file is part of Aleph-w library
 
  Copyright (c) 2002-2018 Leandro Rabindranath Leon 
 
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:
 
  The above copyright notice and this permission notice shall be included in all
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  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/
 
# include <cstdlib>
# include <ctime>
# include <iostream>
# include <string>
# include <aleph.H>
# include <tpl_avl.H>
# include <tpl_binNodeUtils.H>
 
# include <cassert>
using namespace std;
# include <cassert>
using namespace Aleph;
 
static void print_pair(Avl_Tree<int>::Node *p, int, int) 
{
  cout << "(" << p->get_key() << "," << (int) (p->getDiff()) << ") ";
}
 
static void print(Avl_Tree<int>::Node *p, int, int) 
{
  cout << p->get_key() << " ";
}
 
int main(int argc, char *argv[])
{
  int n = 1000;
  unsigned int t = std::time(0);
  int value;
 
  if (argc > 1)
    {
      try
        {
          n = stoi(argv[1]);
        }
      catch (...)
        {
          n = 1000;
        }
    }
 
  if (n <= 0)
    {
      cerr << "Error: n must be a positive integer." << endl;
      return 1;
    }
 
  if (argc > 2)
    {
      try
        {
          t = stoi(argv[2]);
        }
      catch (...)
        {
          t = std::time(0);
        }
    }
 
  srand(t);
 
  cout << "testAvl " << n << " " << t << endl;
 
  Avl_Tree<int> tree;
  Avl_Tree<int>::Node *node;
  DynArray<int> keys;
  int i;
 
  cout << "Inserting " << n << " random values in tree ...\n";
 
  for (i = 0; i < n; i++)
    {
      do
  {
    value = (int) (n*10.0*rand()/(RAND_MAX+1.0));
    node = tree.search(value);
  }
      while (node not_eq nullptr);
 
      cout << value << " ";
      node = new Avl_Tree<int>::Node (value);
      tree.insert(node);
      keys.append(value);
    }
  cout << endl << "verifying avl tree after insertions ... " 
       << endl;
  assert(is_avl(tree.getRoot()));
  cout << " done" << endl;
 
  cout << "start-prefix ";
  preOrderRec(tree.getRoot(), print);
  cout << endl << endl;
 
  cout << endl
       << "start-infix ";
  inOrderRec(tree.getRoot(), print_pair);
  cout << endl << endl;
    
  
  for (i = 0; i < n/2; i++)
    { 
      value = keys[i];
      node = tree.remove(value);
      assert(node != nullptr);
 
      cout << value << " ";
      delete node;
    }
 
  cout << endl
       << "start-prefix ";
  preOrderRec(tree.getRoot(), print);
  cout << endl << endl;
    
  cout << endl << "verifying avl tree after deletions ... " ;
  assert(is_avl(tree.getRoot()));
  cout << " done" << endl;
 
  destroyRec(tree.getRoot());
}