Simple Tower Of Hanoi Algorithm in Python


The objective of the Tower of Hanoi mathematical game or puzzle is to move the entire stack to another rod, the following simple rules should be obeyed:

  1. Only 1 disk can be moved at a time.
  2. In Each move you can take the upper disk from one of the stacks and place it on top of another stack.
  3. No disk can be placed on top of a smaller disk
tower of Hanoi algorithm in Python

Python Program for Tower of Hanoi :

# source rod A = [] # middle rod B = [] # target rod C = [] def showAll():    print(A, B, C, '_________________', sep = '\n'); def move(n, source, target, bridge): if n > 0: # move n - 1 disks from source to bridge, so they are out of the way move(n - 1, source, bridge, target) # move the nth disk from source to target target.append(source.pop()) # Display our progress showAll() # move the n - 1 disks that we left on bridge onto target move(n - 1, bridge, target, source) discs = int(input("Number of disks: ")) print(discs, '_________________', sep = '\n'); A = list(range(1, discs+1))[::-1] showAll() # initiate call from source A to target C with auxiliary B move(discs, A, C, B) print("Number of moves:" + str(2**discs - 1))

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