In a binary tree, how many nodes can be at the maximum level 'h'?
Practice Questions
Q1
In a binary tree, how many nodes can be at the maximum level 'h'?
2^h
2^(h+1)
h^2
h!
Questions & Step-by-Step Solutions
In a binary tree, how many nodes can be at the maximum level 'h'?
Step 1: Understand what a binary tree is. A binary tree is a tree data structure where each node has at most two children.
Step 2: Identify what 'level h' means. The level of a node in a binary tree starts from 0 for the root node. So, level 0 is the root, level 1 is the children of the root, level 2 is the children of those children, and so on.
Step 3: Recognize that at each level, the number of nodes can double. At level 0, there is 1 node (the root). At level 1, there can be 2 nodes (the children of the root). At level 2, there can be 4 nodes (the children of the nodes at level 1).
Step 4: Generalize this pattern. The number of nodes at level h is 2 raised to the power of h (2^h). This is because each node can have 2 children, leading to exponential growth.
Step 5: Conclude that the maximum number of nodes at level h in a binary tree is 2^h.
