public class Swapper
{
   /**
      This method swaps adjacent elements of the given array
      @param values an array
   */

   public void swap(int[] values, int first, int second)
   {
      int temp = values[first];
      values[first] = values[second];
      values[second] = temp;
   }

   public void swapAdjacentElements(int[] values)
   {
      for(int i = 0; i < values.length; i++)
      {
         swap(values, i, ++i);
         if(i + 2 > values.length - 1){break;}
      }
   }


   // This method is used to check your work
   public int[] check(int[] values)
   {
      swapAdjacentElements(values);
      return values;
   }
}