Merging two linked lists into a larger list means combining the nodes from two separate linked lists into a single linked list in a specific order. Here's an example of how to merge two linked lists into a larger list using C:
```
struct Node* mergeLists(struct Node* head1, struct Node* head2) {
if (head1 == NULL) {
return head2;
}
if (head2 == NULL) {
return head1;
}
if (head1->data < head2->data) {
head1->next = mergeLists(head1->next, head2);
return head1;
} else {
head2->next = mergeLists(head1, head2->next);
return head2;
}
}
```
In this code, we first check if either of the two input lists is empty. If one of the lists is empty, we simply return the other list as the merged list. If both lists are non-empty, we compare the data values of the first nodes in each list. If the data value in the first node of the first list is less than the data value in the first node of the second list, we add the first node of the first list to the merged list and recursively call `mergeLists` with the next node of the first list and the entire second list. If the data value in the first node of the second list is less than or equal to the data value in the first node of the first list, we add the first node of the second list to the merged list and recursively call `mergeLists` with the entire first list and the next node of the second list. This process continues until we reach the end of either input list. Once we reach the end of one of the input lists, we simply append the remaining nodes from the other input list to the end of the merged list. Finally, we return the head of the merged list.
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