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Topic: Tree Problem / Level: beginner
Problem:
Implement a function to print the pre-order traversal of a binary tree using a stack.
More Problems
Write a program to find the longest path in a binary search tree.
Implement a function to check if a binary search tree is height-balanced.
Write a program to find the number of odd leaf nodes in a binary tree.
Implement a function to find the number of even leaf nodes in a binary tree.
Write a program to find the first unique node in a binary search tree.
Implement a function to find all duplicate subtrees in a binary tree.
Write a program to find the first leaf node in a binary tree.
Implement a function to find all internal nodes in a binary search tree.
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