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#include <iostream>
#include <fstream>
#include "BibliotecaPilaGenerica.h"
using namespace std;
/* NEXT: (void *), DATA: (int *) */
enum nodeIndices { NEXT, DATA };
void cargapila(void *&pila, void *arreglo)
{
int i;
int **numbers = (int **) arreglo;
pila = nullptr;
for (i = 0; numbers[i]; i++) {
push(pila, numbers[i]);
}
}
void push(void *&pila, void *data)
{
void **node = new void * [2];
node[NEXT] = pila;
node[DATA] = data;
pila = node;
}
void *pop(void *&pila)
{
void **node;
if (pila == nullptr) {
return nullptr;
} else {
node = (void **) pila;
pila = node[NEXT];
return node[DATA];
}
}
int pilavacia(void *pila)
{
return pila == nullptr;
}
void imprimepila(
void *pila,
void (*imprimenumero)(ostream &out, void *),
const char *filename
) {
ofstream out(filename);
if (!out) {
cerr << "Error: no se pudo abrir archivo\n";
}
void **next;
void **node;
int data;
next = (void **) pila;
while (next) {
node = (void **) next;
imprimenumero(out, node[DATA]);
next = (void **) node[NEXT];
}
}
/* hanoi */
void muevepila(void *pilasrc, void *&piladest)
{
void *pilaaux = nullptr;
/* count elements */
int i = 0;
void **next = (void **) pilasrc;
while (next) {
next = (void **) *next;
i++;
}
// cout << "n = " << i << '\n';
hanoi(i, pilasrc, nullptr, piladest);
}
static void hanoi(int n, void *pila1, void *pila2, void *pila3)
{
/* FIXME: I don't know where it's the bug. Here or in pop(). Also the stack
* representation different from what is asked in the problem statement */
void *data;
if (n == 0) {
return;
} else if (n == 1) {
data = pop(pila1);
push(pila3, data);
} else {
hanoi(n - 1, pila1, pila3, pila2);
data = pop(pila1);
push(pila3, data);
hanoi(n - 1, pila2, pila1, pila3);
}
}
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