public class ArrayManipulator {
  public static void main(String []args) {
    Character alphabet[] = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
    printCharacterArray(alphabet);
    System.out.println("-----------");
    
    Stack stack = new ArrayStack();
    invertArray(alphabet, stack);
    
    printCharacterArray(alphabet);
  }
  
  public static void invertArray(Object []array, Stack stk) {
    for(int i=0; i<array.length; i++)
      stk.push(array[i]);
    for(int i=0; i<array.length; i++)
      array[i] = stk.pop();
  }
  
  public static void printCharacterArray(Character []array) {
    for(Character c : array)
      System.out.print(c+"   ");
    System.out.println("");
  }
}