Binary Tree
Detailed guide and Python implementation for the 'Binary Tree' problem.
Problem Statement
Write a function is_univalued_binary_tree(tree_arr) that takes an array representation of a binary tree tree_arr (where the root is at index 0, and children of index i are at 2i + 1 and 2i + 2, with None representing empty nodes) and returns True if every node in the tree has the same value, or False otherwise.
- •0 <= len(tree_arr) <= 1000
Examples
tree_arr = [1, 1, 1, 1, 1, None, 1]
True
All nodes in the tree contain the value 1.
tree_arr = [2, 2, 2, 5, 2]
False
One node has value 5, which differs from other nodes (value 2).
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
Ready to Solve?
Open the problem in PyRun's browser-based Python editor. Your code runs fully offline — no server required.
Recommended Python Resources
Expand your knowledge with related interactive tutorials, cheat sheets, and code comparisons.
Python Loops
Learn how to use Python loops to iterate over data. Master for loops, while loops, break, continue, and loop best practices with interactive examples.
How to Sort a List in Python
Learn how to sort a list in Python using the sort() method and the sorted() function. Discover custom key sorting and reverse order examples.
Python String Methods
A complete reference guide for Python string manipulation. Master formatting, searching, splitting, replacing, and checking string properties.
Python vs JavaScript: Which Programming Language is Best?
A comprehensive comparison between Python and JavaScript. Explore syntax differences, performance, use cases (backend vs frontend), and coding examples.