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  1. import java.util.Random;
  2. class Collatz {
  3.     public static void main(String[] args) {
  4.         Random gen = new Random();
  5.         int a = gen.nextInt();
  6.         do {
  7.             if (a % 2 == 0)
  8.                 a /= 2;
  9.             else
  10.                 a = (a*3)-1;
  11.             System.out.println(a);
  12.         } while(a!=1);
  13.     }
  14. }
Success #stdin #stdout 0.1s 28732KB
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https://ideone.com/mWKv6y
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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