Tree data structure Interview questions - Detailed explanation and sample code in Java

1. Binary tree traversal in Java - Preorder,Inorder,Postorder
2. Iterative(non-recursive) preorder traversal of binary tree in Java
3. Iterative(non-recursive) inorder traversal of binary tree in Java
4. Iterative(non-recursive) postorder traversal of binary tree in Java - Using two stack
5. Iterative(non-recursive) postorder traversal of binary tree in Java - Using one stack
6. Iterative level order traversal of binary tree in Java
7. Find sum of all elements of binary tree in Java - Iterative and recursive
8. Sum of nodes at each level of binary tree in Java
9. Find number of full and half nodes in binary tree
10. Find level with maximum sum in binary tree - display nodes and sum both
11. Find height of binary tree in Java - Recursive and Iterative
12. Find size of binary tree in Java - Iterative and recursive
13. Search(find) an element in binary tree in Java - Recursive and Iterative
14. Find maximum element node in binary tree in Java - Recursive and Iterative
15. Level order traversal in reverse order in Java - From leaf nodes to root
16. Zigzag level order traversal of binary tree in Java
17. Find diameter/width of binary tree in Java

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