Convert decimal to ternary(base3) in python

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My idea was to keep dividing until the quotient and remainder were equal, but I can’t seem to get that to work.

Yeah, something like that. Essentially, you want to keep dividing by 3, and collect the remainders. The remainders then make up the final number. In Python, you can use divmod to divide and collect the remainder.

def ternary (n):
    if n == 0:
        return '0'
    nums = []
    while n:
        n, r = divmod(n, 3)
        nums.append(str(r))
    return ''.join(reversed(nums))

Examples:

>>> ternary(0)
'0'
>>> ternary(1)
'1'
>>> ternary(2)
'2'
>>> ternary(3)
'10'
>>> ternary(12)
'110'
>>> ternary(22)
'211'

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