43 lines
1.2 KiB
Python
43 lines
1.2 KiB
Python
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"""
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# collatz()
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Write a function named collatz() that has one parameter named number. If
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number is even, then collatz() should print number / 2 and return this value.
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If number is odd, then collatz() should print and return 3 * number + 1.
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Then write a program that lets the user type in an integer and that
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keeps calling collatz() on that number until the function returns the value 1.
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(Amazingly enough, this sequence actually works for any integer—sooner or
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later, using this sequence, you’ll arrive at 1! Even mathematicians aren’t sure
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why. Your program is exploring what’s called the Collatz sequence, sometimes
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called “the simplest impossible math problem.”)
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"""
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import time
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def collatz(number):
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if number % 2 == 0:
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res = int(number / 2)
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else:
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res = 3 * number + 1
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print(res)
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return res
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def cli():
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print("Ingresa un número entero:", end=" ")
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number = input()
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try:
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number = int(number)
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wait = 0.1 / len(str(number))
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while number != 1:
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number = collatz(number)
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time.sleep(wait)
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except ValueError:
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print(f"¡'{number}' no es un número entero!")
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cli()
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cli()
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