Balanced Binary Tree
Prereq: DFS Fundamentals
A balanced binary tree is defined as a tree such that either it is an empty tree, or both 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
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>>> a = [1, 2, 3]
>>> a[-1]
3