testLuka.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,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/
# include <ctime>
# include <cstdlib>
# include <cassert>
# include <gsl/gsl_rng.h> 
# include <cstring>
# include <iostream>
# include <ah-errors.H>
# include <tpl_binNode.H>
# include <tpl_binNodeUtils.H>
 
using namespace std;
 
gsl_rng * r = NULL;
 
 
void init_random(int seed)
{
  r = gsl_rng_alloc (gsl_rng_mt19937);
 
  if (r == NULL)
    ah_bad_alloc();
 
  gsl_rng_set(r, seed % gsl_rng_max(r));
}
 
 
size_t get_rand(const size_t & n)
{
  return gsl_rng_uniform_int(r, n) + 1;
}
 
 
    template <class Node>
Node * random_tree(const size_t & n)
{
  if (n == 0) 
    return Node::NullPtr;
 
  Node * root = new Node; // apartar memoria nodo 
 
      /* sorteo que define aleatoriamente la posición infija de la raíz */
  const size_t i = get_rand(n);
 
  LLINK(root) = random_tree<Node>(i - 1); // aleatorio de r - 1 nodos
  RLINK(root) = random_tree<Node>(n - i); // aleatorio de n - r nodos
 
  return root;
}
 
 
    template <class Node>
string luka(Node * p)
{
  if (p == Node::NullPtr)
    return string("b");
 
  return string("a") + luka(LLINK(p)) + luka(RLINK(p));
}
 
    template <class Node>
Node * luka_to_tree(char *& cod)
{
  if (*cod == '\0')
    return Node::NullPtr;
 
  if (*cod++ == 'b')
    return Node::NullPtr;
 
  Node * p = new Node;
 
  LLINK(p) = luka_to_tree<Node>(cod);
  RLINK(p) = luka_to_tree<Node>(cod);
 
  return p;
}
 
int main(int argc, char *argv[])
{ 
  const size_t n = argc > 1 ? atol(argv[1]) : 10;
 
  int t = std::time(NULL);
 
  if (argc > 2)
    t = atol(argv[2]);
 
  cout << "testLuka " << n << " " << t << endl;
 
  init_random(t);
 
  BinNode<int> * tree_root = random_tree< BinNode<int> >(n);
 
  string s = luka(tree_root);
  cout << "luka(tree_root) = " << s << endl;
 
  char * cod_orig = strdup(s.c_str());
  char * cod = cod_orig;
 
  BinNode<int> * aux =  luka_to_tree< BinNode<int> >(cod);
 
  assert(areSimilar(aux, tree_root));
 
  destroyRec(aux);
  destroyRec(tree_root);
  free(cod_orig);
  gsl_rng_free(r);
}