What is the correct description of a binary tree?

A binary tree is a tree data structure in which each node has at most two children, referred to as the left child and the right child. The left child node contains a value less than or equal to its parent node, while the right child node contains a value greater than or equal to its parent node. The nodes in a binary tree can be traversed in different ways such as in-order, pre-order, and post-order. Binary trees are commonly used in computer science for efficient data storage, searching, and sorting algorithms.

相关问题

6. Constructing a binary search tree -- based on the un-balanced BST algorithms covered in class -- from inserting the values 5, 2, 9, 6, 3, 8, 1 in that order. In what order are the values visited in a preorder traversal of the resulting tree? A. 9,8,6,5,3,2,1 B. 5,3,2,1,9,8,6 C. 3,5,2,9,1,8,6 D. 5,2,1,3,9,6,8

The resulting binary search tree from inserting the values 5, 2, 9, 6, 3, 8, 1 in that order is:

     5
   /   \
  2     9
 / \   /
1   3 6
     \
      8

The order of values visited in a preorder traversal of the resulting tree is:

5, 2, 1, 3, 9, 6, 8

So, the correct answer is D.