Learn Recursion by Solving the Tower of Hanoi Puzzle - Step 19

Python
1

Tell us what’s happening:

The instructions say to replace the (i +1) % 3 in my if condition with remainder, as remainder is now equal to (i + 1) % 3.

I’ve done that, but the program says my code doesn’t pass. The only feedback it gives me is that I should replace the (i + 1) % 3 with remainder in my if condition, which as I previously stated, I believe I have already done.

Your code so far

NUMBER_OF_DISKS = 3
number_of_moves = 2**NUMBER_OF_DISKS - 1
rods = {
    'A': list(range(NUMBER_OF_DISKS, 0, -1)),
    'B': [],
    'C': []
}


# User Editable Region

def move(n, source, auxiliary, target):
    # display starting configuration
    print(rods)
    for i in range(number_of_moves):
        remainder = (i + 1) % 3
        if remainder:
            print(f'Move {i + 1} allowed between {source} and {target}')

# User Editable Region


# initiate call from source A to target C with auxiliary B
move(NUMBER_OF_DISKS, 'A', 'B', 'C')

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Challenge Information:

Learn Recursion by Solving the Tower of Hanoi Puzzle - Step 19

2

Here is the original code:

        remainder = (i + 1) % 3
        if (i + 1) % 3 == 1:

You replaced a little more than (i +1) % 3. You can only replace the part of the expression that is stored in the remainder variable

3

I got it, thanks for your help!

1 Like
4

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