Balanced Binary Tree

Prereq: DFS Fundamentals

A balanced binary tree is defined as a tree such that either it is an empty tree, or all its subtree are balanced and has a height difference of at most 1.

In that case, given a binary tree, determine if it's balanced.

Parameter

  • tree: A binary tree.

Result

  • A boolean representing whether the tree given is balanced.

Examples

Example 1

Input:

Output: true

Explanation: By definition, this is a balanced binary tree.

Example 2

Input:

Output: false

Explanation: The subtrees of the node labelled 3 has a height difference of 2, so it is not balanced.

Try it yourself

Solution

Title

Script

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1  >>> a = [1, 2, 3]
2  >>> a[-1]
3  3

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