Data Structures question

Write a method called removeBelow in the class stackApplication that accepts two parameters called elem of type int and an ArrayStack of integers st. The method should remove all the elements of the stack that are below elem from the stack. Example: elem 15 top Stack (before method call): 20 14 18 16 10 top Stack (After method call) 20 18 16 Method heading public static void removeBelow(int elem, Arraystack st)