# Part 13 - Check if Binary Tree Contains a Key Coded in Python

Kindson The Genius
Published at : 11 Oct 2021
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This is Part 13 of our complete Tutorial in Binary Tree coded in Python. In this part, we write the Python code to perform a Breadth-First Search using a Queue.

🔥 This is a Complete Tutorial Series on Binary Trees
1. Defining a Tree - https://youtu.be/TezryjBe3Ts
2. Define the Recursive Insert function https://youtu.be/CQbJfvn4HVs
3. Adding Nodes and Building the Tree https://youtu.be/vPPAtfs0XMU
4. Printing all nodes InOrder https://youtu.be/RFjXYPUBMmU
5. Printing all Nodes PreOrder https://youtu.be/nW6cVJtnayI
6. Printing all Nodes PostOrder https://youtu.be/xVdnrFyobJY

7. Breadth-First Search (BFS) - Algorithm Using Queues https://youtu.be/lyVRSBFVQQM
8. Adjacency List/Matrix Algorithm - https://youtu.be/l3aLJIM9RGo
9. Adjacency List Code in Python - https://youtu.be/DcHHVCPiZY0

Solutions to Other Binary Tree Challenges
👉 Find the height of a binary tree - https://youtu.be/d5-2kzgun4c
👉 Breadth-First Search of Binary Tree - https://youtu.be/f9QXPaLrPnE
👉 Order-Level Traversal of Binary Tree - https://youtu.be/DoXT7zZSJrU

🔥 Explaining Binary Search Tree - https://youtu.be/9hzvRWe9jS8
🔥 Learn about Graphs in Python https://youtu.be/VTH21EqzECk

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