用英语解释 二叉树的所有相关概念

Binary Tree: A binary tree is a tree data structure in which each node has at most two children, which are referred to as the left child and the right child.

Root: The root of a binary tree is the topmost node in the tree, and it has no parent.

Leaf: A leaf is a node in a binary tree that has no children.

Parent: A parent is a node in a binary tree that has at least one child.

Child: A child is a node in a binary tree that has a parent.

Sibling: Siblings are nodes in a binary tree that have the same parent.

Height: The height of a binary tree is the maximum number of edges from the root to a leaf node.

Depth: The depth of a node in a binary tree is the number of edges from the root to that node.

Binary Search Tree: A binary search tree is a type of binary tree in which the left child of a node contains only nodes with keys less than the node's key, and the right child of a node contains only nodes with keys greater than the node's key.

Traversal: Traversal is the process of visiting every node in a binary tree in a specific order. There are three types of traversal: in-order, pre-order, and post-order.