Implement the Tower of Hanoi Algorithm - last stretch!

Curriculum Help
1

Tell us what’s happening:

my string comes out perfectly formatted and in line with the examples, no wrong spaces or anything. what am i doing wrong? when i run hanoi_solver(3) or 4 or 5 it comes out correctly

Your code so far

def hanoi_solver(disks):
    
    first = [x for x in range(disks,0,-1)]
    start = [first,[],[]]
    running = []
    running.append(f'{start[0]} {start[1]} {start[2]}')
    current = start
    
    def move (n,source: int,destination: int, aux: int ):
        if n == 0:
            return
        if n == 1:
            current[destination].append(current[source][-1])
            current[source].remove(n)
            running.append(f'{current[0]} {current[1]} {current[2]}')
            return
        
        move(n-1,source,aux,destination)
        
        current[destination].append(current[source][-1])
        current[source].remove(n)
        running.append(f'{current[0]} {current[1]} {current[2]}')
        
        move(n-1,aux,destination,source)
        return

    move(disks,0,2,1)

    
    new_running = ''
    for x in running:
        x = f'{x}\n'
        new_running +=x
    return new_running

print(hanoi_solver(3))

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Challenge Information:

Implement the Tower of Hanoi Algorithm - Implement the Tower of Hanoi Algorithm

GitHub Link: https://github.com/freeCodeCamp/freeCodeCamp/blob/main/curriculum/challenges/english/blocks/lab-tower-of-hanoi/68773ee26f332a80bc0295db.md

2

Hi @robkarlson104

image
image494×295 17.7 KB

Your code contains an extra new character at the end.

Happy coding

3

There is an extra line break at the end of your output.
You can use join instead.

words = ["Hello", "world"]
result = " ".join(words)
print(result) # Hello world

This is an example.