This is sheet is prepared by Raj Vikramaditya A.K.A Striver, Candidate Master, 6*, who has bagged offers from Google Warsaw, Facebook London, Media.net(Directi). He has also interned at Amazon India. He is also one of the top educators at Unacademy and was at GeeksforGeeks as well.

More over, these simple set of questions in the Striver's Tree Series contains all important concepts required to excel in the Tree Data Structure.

Problems on Tree Data Structure:

Problem/Solution	Leetcode	Youtube
Introduction to Trees		Link
Binary Tree Representation in C++		Link
Binary Tree Representation in Java		Link
Binary Tree Traversals in Binary Tree		Link
Preorder Traversal of Binary Tree	Link	Link
Inorder Traversal of Binary Tree	Link	Link
Post-order Traversal of Binary Tree	Link	Link
Level order Traversal / Level order traversal in spiral form	Link	Link
Iterative Preorder Traversal of Binary Tree	Link	Link