Converting a single linked list to a double linked list
I have created a single linked list that has integers from a file. How do I copy the nodes in the single linked list to a double linked list?
I have something like:
p->next = q->next;
p->back = q;
q->next->back = p;
q->next = p;
But I just don't know how to implement it and make it switch to a double linked list.
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