/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Collatz
{
	public static void main (String[] args) throws java.lang.Exception
	{
		System.out.println(getCollatzSequence(-3));
	}
	public static String getCollatzSequence(int num){
		String str = " ";
		int counter = 0;
		if(num <= 0){
			return "Error";
		}
		while(num != 4){
			counter++;
			str += num+" ";
			if(num % 2 == 0){
				num = num / 2;
			}
			else{
				num =(num * 3) - 1;
			}
			if(counter != 97 && number != 8){
				return "Does not converge.";
			}
			str +="4 2 1";
		}
 
		}
	}
}

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