Given a perfect binary tree, print nodes of middle level without computing its height. A perfect binary tree is a binary tree in which all interior nodes have two children and all leaves have the same depth or same level.
Output : 4 5 6 7
The idea is similar to method 2 of finding middle of singly linked list.
Use fast and slow (or tortoise) pointers in each route of a the tree.
1. Advance fast pointer towards leaf by 2.
2. Advance slow pointer towards lead by 1.
3. If fast pointer reaches the leaf print value at slow pointer
4. Call recursively the next route.
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- Perfect Binary Tree Specific Level Order Traversal | Set 2
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- Print nodes between two given level numbers of a binary tree
- Print all nodes except rightmost node of every level of the Binary Tree
- Print all the nodes except the leftmost node in every level of the given binary tree
- Print extreme nodes of each level of Binary Tree in alternate order
- Print even positioned nodes of odd levels in level order of the given binary tree
- Print odd positioned nodes of odd levels in level order of the given binary tree
- Print odd positioned nodes of even levels in level order of the given binary tree
- Print even positioned nodes of even levels in level order of the given binary tree
- Recursive Program to Print extreme nodes of each level of Binary Tree in alternate order
- Print a Binary Tree in Vertical Order | Set 3 (Using Level Order Traversal)
Improved By : Prasad_Kshirsagar