Write a method printTwos that accepts an integer parameter n and that prints an

Question

Write a method printTwos that accepts an integer parameter n and that prints an expression composed of a single odd number multiplied by twos that is equal to n. The twos should surround the odd number with an equal number of twos on either side if possible. Several calls and their output are shown below. Call Output printTwos(80); 2 * 2 * 5 * 2 * 2 printTwos(68); 2 * 17 * 2 printTwos(96); 2 * 2 * 2 * 3 * 2 * 2 printTwos(32); 2 * 2 * 2 * 1 * 2 * 2 printTwos(1); 1 printTwos(2); 2 * 1 If the expression has an odd number of twos, then the "extra" two should appear at the front of the expression, as shown in the output from passing 96 and 32. If the number is odd to begin with, it should simply be printed. It is possible that the odd number to print will be 1, as shown in the output from passing 32, 1, and 2 above. Your method should throw an IllegalArgumentException if passed a value less than 1. Note that the output does not advance to the next line.

Explanation / Answer

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import java.util.*;
public class main
{
public static void main(String[] args)
{int n;
Scanner in = new Scanner(System.in);
System.out.print("Enter a number: ");
n=in.nextInt();
printTwos(n);
}
public static void printTwos(int n)
{if(n%4==0)
   {System.out.print("2 * ");
    printTwos(n/4);
    System.out.print(" * 2");
    }
else if(n%2==0)
    {System.out.print("2 * ");
     printTwos(n/2);
    }
else
    {System.out.print(n);
    }
}
}

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