Question

What code would I add to the following program to have it print out the runtime each time the program is used?

def moveTower(n, source, dest, temp):
if n == 1:
print("Move disk from", source, "to", dest+".")
else:
moveTower(n-1, source, temp, dest)
moveTower(1, source, dest, temp)
moveTower(n-1, temp, dest, source)

def hanoi(n):
moveTower(n, "A", "C", "B")

def main():
print("Towers of Hanoi")
n = int(input("How many disks? "))
moveTower(n, "A", "C", "B")

if __name__ == '__main__': main()

Answer 1

Corrected Python code:

#importing time library

import time

def moveTower(n,source,dest,temp):

    if n==1:

        print("Move disk from",source,"to",dest+".")

    else:

        moveTower(n-1,source,temp,dest)

        moveTower(1,source,dest,temp)

        moveTower(n-1,temp,dest,source)

def hanoi(n):

    moveTower(n,"A","C","B")

def main():

    #obtaining start time

    s_time=time.time()

    print("Towers of Hanoi")

    n=int(input("How many disks? "))

    moveTower(n,"A","C","B")

    #printing current time-start time to obatin the runtime

    print(str(time.time()-s_time)+" seconds")

if __name__ == '__main__': main()

Screenshot:

Output: