31 lines
560 B
Python
31 lines
560 B
Python
#! python3
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"""Calculate collatz function"""
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def collatz(x_value):
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'''collatz calculation'''
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if x_value % 2 == 0:
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x_value = x_value // 2
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else:
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x_value = 3 * x_value + 1
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print(x_value)
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return x_value
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def get_input():
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'''get custom input'''
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try:
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return int(input())
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except (ValueError, NameError):
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print('Your should input an integer.')
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return get_input()
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N = get_input()
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if N == 0:
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print('It would enter an infinite loop.')
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else:
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while N != 1:
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N = collatz(N)
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print(N)
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