In a complete binary tree, how many nodes are there at the last level if the tot
Practice Questions
Q1
In a complete binary tree, how many nodes are there at the last level if the total number of levels is 'h'?
2^(h-1)
2^h
2^(h+1)
2^(h-1) - 1
Questions & Step-by-Step Solutions
In a complete binary tree, how many nodes are there at the last level if the total number of levels is 'h'?
Step 1: Understand what a complete binary tree is. A complete binary tree is a type of binary tree where all levels are fully filled except possibly for the last level.
Step 2: Identify what 'h' represents. 'h' is the total number of levels in the complete binary tree.
Step 3: Recognize that the last level of a complete binary tree is the level that can have the most nodes.
Step 4: Know that the maximum number of nodes at any level in a binary tree is calculated using the formula 2^(level number).
Step 5: For the last level, which is level 'h-1' (since we start counting levels from 0), the maximum number of nodes is 2^(h-1).
Step 6: Conclude that in a complete binary tree with 'h' levels, the last level can have up to 2^(h-1) nodes.
