Ayuda lista doblemente enlazada
Publicado por steven (3 intervenciones) el 20/09/2016 19:21:53
Hola, alguien me podria ayudar a encontrar el error en el sgte codigo?. No muestra error de sintaxis pero al compilar me dice que ha dejado de funcionar.
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#include <iostream>
#include <cassert>
#include <cstdlib>
#include <string>
using namespace std;
template <typename T>
class DLList { class nodo { private:T data;
nodo *prev; nodo *next; public:nodo (const T &d) : data(d), prev(nullptr), next (nullptr) {
}nodo* getNext ()
{return next;
}void setNext (nodo *n)
{ next = n; }nodo * getPrev ()
{return prev;
}void setPrev(nodo *n)
{ prev = n; }T getData (nodo *n)
{return data;
} };private:int sz;
nodo *first; nodo *last;public:DLList() : sz(0), first (nullptr), last (nullptr) {}
int size ()
{return sz;
}nodo* MoveToFromTheStart (int n)
{assert (n>=-1 && n<sz);
nodo *y = first;
for (int i = 1; i<=n; i++)
{y = y->getNext ();
}return y;
}nodo* MoveToFromTheEnd (int n)
{assert (n>=-1 && n<sz);
nodo *y = last;
for (int i= size()-1; i>n; i--)
{y= y ->getPrev();
}return y;
}nodo* MoveOneBeforeS (int n)
{MoveToFromTheStart (n-1);
}nodo* MoveOneBeforeE(int n)
{MoveToFromTheEnd (n-1);
}nodo* MoveOneLater (int n)
{MoveToFromTheStart (n+1);
}bool empty ()
{return sz==0;
}void add (int i, const T& d )
{nodo *x = new nodo (d);
if (i==0)
{x -> setNext (first);
first -> setPrev (x);
first = x;if (empty())
{ last = x;}}else
if (i==sz)
{nodo *l = last;
last ->setNext (x);
x -> setPrev (l);
last = x;}else
if (i<=(sz/2))
{nodo *prev = MoveOneBeforeS(i);
nodo *later = MoveOneLater (i);
x -> setNext(prev->getNext());
x -> setPrev(prev);
later -> setPrev (x);
x -> setPrev (prev);
prev -> setNext (x);
}else
if (i>(sz/2))
{nodo *prev = MoveOneBeforeE(i);
nodo *later = MoveOneLater (i);
x -> setNext (prev->getNext());
later -> setPrev (x);
x -> setPrev (prev);
prev -> setNext (x);
}sz++;
}Get (int i)
{assert (i>=0 && i<sz);
if (i<=sz/2)
{nodo * y = MoveToFromTheStart (i);
return y->GetData();
}else
if (i>sz/2)
{nodo *z = MoveToFromTheEnd (i);
return z ->GetData();
}else
if (i==sz-1){
return last -> GetData();
}else
if (i==0)
{return first -> GetData();
} }};int main ()
{DLList <int> a;
a.add(0,1);
return 0;
}Valora esta pregunta
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