Question: (C++) Copy a singly linked list into a doubly linked list; delete singly linked list nodes on the fly. struct nodeSingly { int data; struct
(C++) Copy a singly linked list into a doubly linked list; delete singly linked list nodes on the fly.
struct nodeSingly {
int data;
struct nodeSingly * next;
};
struct nodeDoubly {
int data;
struct nodeDoubly *prev, *next;
};
struct nodeDoubly* singlyToDoubly (struct nodeSingly* head) {
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