Solutions

Pre order:

In order:

Post order:

How to use

1. Evaluate the binary tree to determine whether it is a binary search tree.

2. Press answer buttons indicating your answer. Or, use keyboard shortcuts (W = Is BST, S = Not BST, A = Close, D = Next)

3. Modify the problem type using the slider and checkboxes in the problem type panel.

4. Click "Share Tree" share your tree with someone else

Settings

Theme: (Dark)

Lines: (Cornered)

Share Tree

Send the following URL to someone to share your tree with them.