c++ please
Change InsertLast to be used on a double linked list instead of a single linked list. Use prev as the other pointer name.
bool LinkedList::InsertLast(int v) {
if(size == 0) {
return InsertFirst(v);
}
Node *tmp = new Node;
if(tmp == NULL) return false;
tmp->value=v;
last->next=tmp;
last = tmp;
size++;
if(size == 1){
first = last;
}
return true;
}Hi,
bool LinkedList::InsertLast(int v) {
if(size == 0) {
return InsertFirst(v);
}
Node *tmp = new Node;
if(tmp == NULL) return false;
//changes start here
tmp->value=v;
//doubly linked stores not only next but also previous node address
// last node address will become current node previous
tmp->prev=last;
//before insertion last->next value will be null
//now we are giving the newly created node address
last->next=tmp;
// tmp->next will be null and that's correct no need to change or revalue with NULL
last = tmp;
size++;
if(size == 1){
first = last;
}
return true;
}
Please comment below for any further clarification on the answer
c++ please Change InsertLast to be used on a double linked list instead of a single...
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