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Collatz Authors

Collatz

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The Collatz conjecture states that, for any positive integer n, it will eventually reach 1 by repeatedly applying the following procedure:

  • If n is even, divide it by 2.
  • If n is odd, multiply by 3 and then add 1.

The number of steps needed for n to reach 1 is called its stopping time. For example, the stopping time of 10 is six:

10 → 5 → 16 → 8 → 4 → 2 → 1

Print the stopping times of all the numbers from 1 to 1,000 inclusive, each on their own line.

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