CSC231 hanoi.py

--D. Thiebaut 20:50, 9 December 2008 (UTC)

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# hanoi.py
# D. Thiebaut
# implements the game of hanoi in python.
# uses recursion.
#
# to run, type 
#        python hanoi.py 
# at the command line

def moveDisk( source, dest, extra, n ):
    if n==1:
        print "move disk from %s to %s" % ( source, dest )
        return
    
    # more than 1 disk...
    moveDisk( source, extra, dest, n-1)
    print "move disk from %s to %s" % ( source, dest )
    moveDisk( extra, dest, source, n-1)

def main():
    while True:
        n = input( "# of disks? " )
        moveDisk( "A", "B", "C", n )

main()