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1008. Construct Binary Search Tree from Preorder Traversal

Return the root node of a binary search tree that matches the given preorder traversal.

(Recall that a binary search tree is a binary tree where for every node, any descendant of node.left has a value < node.val, and any descendant of node.right has a value > node.val.  Also recall that a preorder traversal displays the value of the node first, then traverses node.left, then traverses node.right.)

 

Example 1:

Input: [8,5,1,7,10,12]
Output: [8,5,10,1,7,null,12]

 

Note: 

  1. 1 <= preorder.length <= 100
  2. The values of preorder are distinct.

Difficulty:

Medium

Lock:

Normal

Company:

Amazon Facebook Oracle

Problem Solution

1008-Construct-Binary-Search-Tree-from-Preorder-Traversal

All Problems:

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All contents and pictures on this website come from the Internet and are updated regularly every week. They are for personal study and research only, and should not be used for commercial purposes. Thank you for your cooperation.