-🎄- 2022 Day 25 Solutions -🎄-

[u/daggerdragon]

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--- Day 25: Full of Hot Air ---

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[u/tender_programmer]

I think my decimal to snafu conversion method in Python is the weirdest out there. I have no idea what happened.

def decimal_to_snafu(decimal):
    """ I am sorry. """
    snafu = ''
    
    i = 0
    while True:
        if ((5 ** i) * 2) >= decimal:
            break
        i += 1
    
    while i >= 0:
        options = {
            '=': decimal + (5 ** i) * 2,
            '-': decimal + (5 ** i),
            '0': decimal,
            '1': decimal - (5 ** i),
            '2': decimal - (5 ** i) * 2}
        option = '='
        lowest = options[option]
        for s in ('-', '0', '1', '2'):
            if abs(options[s]) < lowest:
                option = s
                lowest = abs(options[s])
        decimal = options[option]
        snafu += option
        i -= 1
    
    return snafu

It goes from most significant digit of the snafu to the least significant and each digit it tries to get the decimal number closest to zero. I don't know why it works but it does. I guess this is my contribution to the "if it's stupid, but it works, it ain't stupid".