How to understand the post-order traversal sequence of the binary search tree in big data
This article is about how to understand the post-traversal sequence of big data's binary search tree. The editor thinks it is very practical, so I share it with you. I hope you can learn something after reading this article. Let's take a look at it with the editor.
Enter an array of integers to determine whether the array is the post-traversal result of a binary search tree. If so, return true, otherwise return false. Assume that any two numbers in the input array are different from each other.
Refer to the following binary search tree:
five
/\
2 6
/\
1 3
Example 1:
Input: [1, 6, 3, 2, 5]
Output: false
Example 2:
Input: [1, 3, 2, 6, 5]
Output: true
Tip:
Array length
