无子节点的根节点能否视为叶节点？树的叶节点计数咨询

Absolutely—when a root node has no child nodes at all, it is definitely considered a leaf node.

Let me break this down using standard tree data structure definitions:

• A leaf node is universally defined as a node with no child nodes, regardless of its position in the tree (whether it's the root, a middle node, or otherwise).
• For a tree that consists of just one single node (the root with no children), this node meets the exact criteria of a leaf. If you were counting leaf nodes here, the count would be 1.

I get why this might feel confusing at first—sometimes people associate leaves with being "at the bottom" of a tree, but in formal terms, the only requirement is the absence of children. There's no exception for root nodes in this rule.

内容的提问来源于stack exchange，提问作者Pandu M R