Question

If ud = u , du = d , uu = d , dd = u

And if i get the output “uu du ud” is there a way to get output like this

uu du ud  ---Output already got

d  d  u   ---Because uu=d  du=d  ud=u

  u   u   ---Because dd=u  and the other u comes down

    d     ---finally uu=d so the output is d.

I have have problems with getting this kind of output ,coz i dont know java much.
The code I had written is

public class Test
{
  public static void main(String[] args)
  {

    int count = 0;
    int index = 0;
    Scanner scan = new Scanner(System.in);

    System.out.print("How many Line Paremeters?");
    int amount = scan.nextInt();

    // One array to hold all the names
    String[] name = new String[amount];

    System.out.print("You entered "
        + amount + " as the size of your name list.");
    System.out.println(" ");

    // Ask for all the names
    for (index = 0; index < amount; index++)
    {
      System.out.print("Enter Line Paremeters: ");
      name[index] = scan.next();
    }

    System.out.println(" ");
    System.out.println("The order: ");
    System.out.println(" ");
    System.out.println();

    for (String names1 : name)
    {
      System.out.print(names1 + " ");
    }
  }
}

Answer 1

If I understand correctly you already have the string “uu du ud” and you want to “reduce” it based on the rule: ud = u , du = d , uu = d , dd = u and any left over characters will “come down” as you put it. To do that you need to write a recursive function or an iterating loop ( as per comments) that examines the string in chunks of 2 character long substrings and replace as you go according to your rule. I am reluctant to help any further as this does seem to be homework as @DuncanJones asked.