What is says when I fail:
You should nest your print() and make_allowed_move() calls inside an if statement to execute when n is odd.
It looks nested to me. Not sure what else they are looking for.
Your code so far
NUMBER_OF_DISKS = 4
number_of_moves = 2**NUMBER_OF_DISKS - 1
rods = {
'A': list(range(NUMBER_OF_DISKS, 0, -1)),
'B': [],
'C': []
}
def make_allowed_move(rod1, rod2):
forward = False
if not rods[rod2]:
forward = True
elif rods[rod1] and rods[rod1][-1] < rods[rod2][-1]:
forward = True
if forward:
print(f'Moving disk {rods[rod1][-1]} from {rod1} to {rod2}')
rods[rod2].append(rods[rod1].pop())
else:
print(f'Moving disk {rods[rod2][-1]} from {rod2} to {rod1}')
rods[rod1].append(rods[rod2].pop())
# display our progress
print(rods, '\n')
def move(n, source, auxiliary, target):
# display starting configuration
print(rods, '\n')
for i in range(number_of_moves):
remainder = (i + 1) % 3
if remainder == 1:
if n % 2 != 0:
print(f'Move {i + 1} allowed between {source} and {target}')
make_allowed_move(source, target)
# User Editable Region
else:
print(f'Move {i + 1} allowed between {source} and {auxiliary}')
# make_allowed_move(source, auxiliary)
if n % 2 == 1:
print(f'Move {i + 1} allowed between {source} and {target}')
make_allowed_move(source, target)
elif remainder == 2:
print(f'Move {i + 1} allowed between {source} and {auxiliary}')
make_allowed_move(source, auxiliary)
# User Editable Region
elif remainder == 0:
print(f'Move {i + 1} allowed between {auxiliary} and {target}')
make_allowed_move(auxiliary, target)
# initiate call from source A to target C with auxiliary B
move(NUMBER_OF_DISKS, 'A', 'B', 'C')
Your browser information:
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36
Challenge Information:
Learn Recursion by Solving the Tower of Hanoi Puzzle - Step 40
if n % 2 == 1:
print(f'Move {i + 1} allowed between {source} and {target}')
make_allowed_move(source, target)
should be within the elif statement?
This is a bit misleading as the question that is asked of me is: “Now you need to do the same with your elif statement: put the print() and make_allowed_move() calls inside an if statement to execute when n is odd.”
To me, I should be creating another if statement to execute when ‘n’ is odd, but I have no idea where I am supposed to put that if statement for the code to run. The step could be a bit clearer.
I’m not understanding where I am supposed to put that statement. How can it go in the beginning of an if statement? I don’t understand how they can stack this way.
else:
print(f'Move {i + 1} allowed between {source} and {auxiliary}')
# make_allowed_move(source, auxiliary)
elif remainder == 2:
if n % 2 == 1:
print(f'Move {i + 1} allowed between {source} and {target}')
make_allowed_move(source, target)
print(f'Move {i + 1} allowed between {source} and {auxiliary}')
make_allowed_move(source, auxiliary)
type or paste code here