In a binary tree, what is the maximum number of nodes at level 'h'?
Practice Questions
Q1
In a binary tree, what is the maximum number of nodes at level 'h'?
h
2^h
2^(h+1)-1
h^2
Questions & Step-by-Step Solutions
In a binary tree, what is the maximum number of nodes at 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, referred to as the left child and the right child.
Step 2: Identify what 'level' means in a binary tree. The level of a node is defined by the number of edges on the path from the root node to that node. The root node is at level 0.
Step 3: Recognize that at level 0 (the root), there is 1 node (the root itself).
Step 4: At level 1, there can be a maximum of 2 nodes (the two children of the root).
Step 5: At level 2, there can be a maximum of 4 nodes (each of the 2 nodes at level 1 can have 2 children).
Step 6: Continue this pattern: at level 3, there can be a maximum of 8 nodes, and so on.
Step 7: Notice the pattern: the maximum number of nodes at level 'h' is 2 raised to the power of h (2^h).
Step 8: Conclude that the maximum number of nodes at level 'h' in a binary tree is 2^h.
