Metacat

import java.util.Stack;

   /**

    * Revise stack change a stack to opposite order 

    */

   public static Stack reviseStack(Stack stack)

   {

     Stack result = new Stack();

     // make sure the parameter is correct

     if (stack == null || stack.isEmpty())

     {

       result = stack;

       return result;

     }

     while (!stack.isEmpty())

     {

       Object obj = stack.pop();

       result.push(obj);

     }

     return result;

   }