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  1. import java.util.Scanner;
  2.  
  3. class Collatz
  4. {
  5. 	public static void main (String[] args) throws java.lang.Exception
  6. 	{
  7. 		Scanner sc = new Scanner(System.in);
  8.     	long number;
  9.     	do {
  10.     		System.out.print("Enter a number greater than 0: ");
  11.     		number = sc.nextLong();
  12.     	} while (number <= 0);
  13.     	while (number > 1) {
  14.     		System.out.print(number+" ");
  15.     		if (number % 2 == 0) {
  16.     			number /= 2;
  17.     		} else {
  18.     			number = 3 * number + 1;
  19.     		}
  20.     	}
  21.     	System.out.println(number);
  22. 	}
  23. }
Success #stdin #stdout 0.21s 58956KB
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stdout
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Enter a number greater than 0: 7 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1
https://ideone.com/1Ql4AK
language:
Java (HotSpot 12)
created:
2 hours ago
visibility:
public

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