Created
August 13, 2019 02:29
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| def persistence(n): | |
| i = 0 | |
| if len(str(n)) == 1: | |
| return i | |
| while len(str(n)) > 1: | |
| i += 1 | |
| str_n = str(n) | |
| list_n = list(str_n) | |
| n = 1 | |
| for el in list_n: | |
| n = n * int(el) | |
| return i | |
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