Most of the recursive programs takes exponential time that is why it is very hard to write them iteratively . T(1) = 2k T(2) = 3k T(3) = 4k So the space complexity is O(n). Here time complexity is exponential but space complexity is linear .

## What is the time complexity of Tower of Hanoi problem?

The time complexity to find order of moves of discs in Tower of Hanoi problem is **O(2^n)**.

## Is Tower of Hanoi difficult?

The Towers of Hanoi is an ancient puzzle that is a good example of **a challenging or complex task** that prompts students to engage in healthy struggle. … To solve the Towers of Hanoi puzzle, you must move all of the rings from the rod on the left to the rod on the right in the fewest number of moves.

## Is Tower of Hanoi exponential?

Towers of Hanoi. A game sometimes called the Towers of Hanoi involves **exponential growth** in terms of the number of moves required to finish the game. In the picture below you see a stack of disks of decreasing size placed on the leftmost black base.

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

A Tower of Hanoi consisting of 20 disks will take **12 days** to complete, while 25 disks will take more than 1 year, and 40 disks will take approximately 34,000 years.

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

For example if you have three disks, the minimum number of moves is 7. If you have four disks, the minimum number of moves is 15.

…

The minimum number of moves for any number of disks.

Number of disks | Minimum number of moves |
---|---|

2 | 3 |

3 | (2 X3)+1 = 7 |

4 | (2X7)+1 = 15 |

5 | (2X15)+1=31 |

## Which rule is not satisfied for Tower of Hanoi?

Which of the following is NOT a rule of tower of hanoi puzzle? Explanation: The rule is **to not put a disk over a smaller one**.

## How many moves does it take to solve the Tower of Hanoi for 5 disks?

Were you able to move the two-disk stack in three moves? 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**.

## Can Tower of Hanoi be solved using Master Theorem?

Rules of puzzle: There are three pegs and a stack of n disks on one of the pegs. In the stack each disk has smaller radius than the one below it. … In this case a = 2,b = 1,d = 0, and the theorem tells us we have **2n disk moves** necessary to solve the Towers of Hanoi puzzle.

## Is Tower of Hanoi dynamic programming?

Tower of Hanoi (Dynamic Programming)

## What is the efficiency of Tower of Hanoi algorithm?

5 Answers. It depends what you mean by “solved”. The Tower of Hanoi problem with 3 pegs and n disks takes **2**n – 1 moves** to solve, so if you want to enumerate the moves, you obviously can’t do better than O(2**n) since enumerating k things is O(k) .