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Q: What is the function of hensen's node in chick embryo?
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What is fetal node?

developing embryo.


Write an iterative function to search an element in a binary search tree?

_node* search (_node* head, _key key) { _node* node; for (node=head; node != NULL;;) { if (key == node->key) return node; else if (key < node.>key) node = node->left; else node = node->right; } return node; }


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What is function of AV node?

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What is the correct sequence of parts that function to carry cardiac impulses?

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Has the sinus node something to do with the sine function in maths?

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WAP in c plus plus to implement linked list?

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Write an algorithm for the implementation of a circular doubly linked list?

Create a new node, making sure it is not allocated locally in the function and thus will not be destroyed when the function execution finishesFill in dataUse the "last node" pointer in the list and copy the "next" pointer location (pointing to the first node) into the new nodes "next" pointerSet the "last node" "next" pointer to point to the new nodeChange the list's "last node" pointer to point to the new nodeFor an example of implementation see: How_you_insert_a_newnode_in_singly_circular_link_list


What is a sentinel in programming?

A real-world sentinel is a soldier or guard, someone who keeps watch. In programming, a sentinel is typically a "dummy" node that is used specifically to mark the beginning or end of a data sequence. If we consider a singly-linked list (also known as a forward list), each node points forwards to the next node in the sequence. When we insert a new node into a list, we typically specify the node that will come immediately before it in the sequence because that node also points to the node that will (ultimately) come after it. Thus our algorithm can be encoded as follows: void insert_after (Node* node, Node* prev) { assert (node); assert (prev); node->next = prev->next; prev->next = node; } This is fine until we try and insert a new node at the start of the sequence or try to insert into an empty list. In both cases, p will be a null pointer because there can be no node that can come before the new node, n. Thus the assertion that p is non-null will fail. To cater for this, we must over-complicate the algorithm by testing for each of these special cases and, in order to do so, pass another argument to the function, namely the list itself: void insert_after (List* list, Node* node, Node* prev) { assert (list); assert (node); if (!list->head) { /* cater for empty list */ assert (!prev); list->head = node; node->next = null; } else if (!prev) { /* insert at head of list */ node->next = list->head; list->head = node; } else { node->next = prev->next; prev->next = node; } } However, if we place a sentinel at the beginning of the list, we guarantee that even an empty list will always have at least one node (the sentinel) and that whenever we insert a new node into the list there will always be a node that can come before that new node. Thus our original function works efficiently without having to deal with any special cases. The sentinel node is similar to any other node except that it does not store any data, it simply points to the first node in the sequence or to null if the list is empty.