Answer / Dinesh Singh

A linked list in C++ is a linear data structure consisting of nodes that store data and a pointer to the next node. Each node can be thought of as a separate memory location with its own variables, including a data member and a pointer to the next node. An example of a simple singly-linked list could look like this:

```cpp
struct Node {
int data;
Node* next;
};

void insert(Node** head_ref, int new_data) {
Node* new_node = new Node();
new_node->data = new_data;
new_node->next = (*head_ref);
(*head_ref) = new_node;
}
```

write asingle linked list which read from two list & the do the following 1 sort the prime & nonprime num (prime should be less tn nonprime) 2 each node has a prime num followd by nonprime 3 add a new node into its sutable plce 4 erase the most three duplicated non prime num 5 find the least duplicated prime num

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