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## What is the objective of Tower Hanoi algorithm?

Tower of Hanoi is a mathematical puzzle where we have three rods and n disks. The objective of the puzzle is **to move the entire stack to another rod, obeying** the following simple rules: 1) Only one disk can be moved at a time.

## Which statement is correct in case of Tower of Hanoi?

Answer: option 2. **only one disk can move at a time.**

## What does the Tower of Hanoi measure?

The Towers of Hanoi and London are presumed to measure **executive functions such as planning and working memory**. Both have been used as a putative assessment of frontal lobe function.

## How many steps does it take to complete Tower of Hanoi if there are 5 disks?

Three is the minimal number of moves needed to move this tower. Maybe you also found in the games three-disks can be finished in seven moves, four-disks in 15 and five-disks in **31**.

## What is the goal and all the rules of Tower of Hanoi problem?

The goal is **to move all the disks from the leftmost rod to the rightmost rod**. To move N disks from one rod to another, 2^ −1 steps are required. So, to move 3 disks from starting the rod to the ending rod, a total of 7 steps are required.

## Which data structure can be used suitably to solve the Tower of Hanoi problem?

Explanation: The Tower of Hanoi involves moving of disks ‘stacked’ at one peg to another peg with respect to the size constraint. It is conveniently done using stacks and priority queues. **Stack approach** is widely used to solve Tower of Hanoi.

## Can we solve Tower of Hanoi problem with iterative method?

Not many people are aware that Towers of Hanoi has also a beautiful iterative solution. Here I assume that you already know this problem if not please check Wikipedia Tower of Hanoi page. The key to discover how iterative algorithm work is to actually observe how disks are moved by recursive algorithm.

## How long does it take to solve the Tower of Hanoi?

If you had 64 golden disks you would have to use a minimum of 2^{64}-1 moves. If each move took one second, it would take **around 585 billion years** to complete the puzzle!