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55. Print Nodes Between Two Levels in Binary Tree

Objective: The objective of this task is to print all the nodes of a binary tree that lie between two specified levels.

Example:

Print All Nodes Between Two Given Levels

Approach:

To solve this problem, we perform a level-order traversal of the binary tree.
During the traversal, we keep track of the current level using a global variable, currLevel.
Nodes are printed only if they lie between the specified levels.

Print all nodes between nodes 2 and 3
10 15
20 25 30 35

For further reference, you can read about the solution in the "Level Order Traversal" article and implement the approach discussed above.