Gebruik van python

Python Help
1

verwijder mijn topic

2

There are 10 digits 0-9.

If you have 6 of them, that’s 106.

What exactly do you mean by double digits? Do you mean 2 digits the same next to each other or just 2 (or more?) digits the same?

1 Like
3

no I mean it’s a 6 digit PIN. I completely forgot about him. it is a code combination from 1 to 9 but I think it started with 1, 3, 7 or 9. I just understood from a friend that you can’t just use the Python software that I need someone who has this skill! is this correct? I’m not that smart… I’m almost ashamed, and I have no other option than to seek help here

5

The original question was:

How many 6-digit numbers containing only the digits 1-9, where no adjacent digits are equal, exist?

Here is a brute-force solution to generate all such numbers:

def six_digits_1_9(starts_with=None):
    start = 111111
    stop = 999999
    starts_with = range(1, 10) if starts_with is None else starts_with
    
    for d in range(start, stop + 1):
        if "0" in str(d):
            continue
        if any(i == j for i, j in zip(str(d), str(d)[1:])):
            continue
        if int(str(d)[0]) not in starts_with:
            continue
        yield d

list(six_digits_1_9())  # 294912 possibilities
list(six_digits_1_9([1, 3, 7, 9]))  # 131072 possibilities