This would be just a single node, since no edges (you can think of degree as the number of edges connected to a node). If you are talking about the in-degree, or out-degree of a node being zero, this can happen many times in a directed graph (in-degree = # edges going IN to node, out-degree = # edges going out...).
A straight line
0 Fahrenheit is colder.
A 54 degree angle is an acute angle because it is greater than 0 but less than 90 degrees
It is an acute angle because it is greater than 0 but less than 90 degrees.
a constant polynomial has a degree zero (0).
One important property of a B-Tree is that every node except for the root node must have at least t-1 keys where t is the minimum degree of the B tree. With t-1 keys, each internal node will have at least t children [Cormen et al., Introduction To Algorithms Third Edition, MIT Press, 2009 p. 489].If we allow a minimum degree of 1, then each internal node will have 1-1=0 keys!
Add the following recursive method to your binary tree's node class: size_t Node::count_leaves() { if (!left && !right) return 1; // this node is a leaf size_t count = 0; if (left) count += left-count_leaves(); // count leaves on left if (right) count += right-leaves(); // count leaves on right; return count; // return total leaves. } To count the leaves of the entire tree, call the method on the root node of the tree. To count the leaves of a subtree, call the method on the root node of the subtree.
0 degree latitude is called equator and 0 degree longitude is called prime meridian
The number of nodes in any subtree is the number of nodes in its left subtree, plus the number of nodes in its right subtree, plus one, so you can use a recursive algorithm and start at the root.unsigned intbinarytree_count_recursive(const node *root){unsigned int count = 0;if (root != NULL) {count = 1 + binarytree_count_recursive(root->left)+ binarytree_count_recursive(root->right);}return count;}
poof
the equator
This can be achieved with a recursive-traversal function starting at the root.Binary tree nodes use the following shorthand form (using tertiary conditional operator):int Node::GetNodeCount(){return( 1 +( left ? left.GetNodeCount() : 0 ) +( right ? right.GetNodeCount() : 0 ));}Or in longhand:int Node::GetNodeCount(){// Always include self in countint count = 1;// Is there a left node?if( left )// Increment the count with a recursive traversal.count += left.GetNodeCount();// Is there a right node?if( right )// Increment the count with another recursive traversal.count += right.GetNodeCount();// Return the total count to the caller.return( count );}Tree nodes with variable child nodes (lists of lists) use the following longhand form:int Node::GetNodeCount(){// Always include self in count.int count = 1;// Start with this node's head node (the first child node).Node node = head;// Iterate through all child nodes.while( node ){// Increment the count with a recursive call.count += node.GetNodeCount();// Traverse to the next child node.node = node.next;}// Return the total count to the caller.return( count );}
The root of the tree is stored in array element [0]; for any node of the tree that is stored in array element [i], its left child is stored in array element [2*i], its right child at [2*i+2]
A straight line
A 0 degree is a angle called a straight line but 180 degree is a straight line too. So cool yeah
0 degrees longitude, which runs through Greenwich is called the "prime meridian."
The 0 degree line of Latitude is called the Equator.