import java.util.ArrayList;

/**
* Labstack functions.
* @author cs416
* @version 1
*/
public class LabStack {

    /**
    * Helper method to popN values from the Stack.
    * @param st Stack to pop from
    * @param n NUmber if items to pop from the Stack
    * @return ArrayList
    */
    public static ArrayList<Integer> popN(Stack st, int n) {
	throw new UnsupportedOperationException("TO BE IMPLEMENTED");
    }

    /**
    * Helper method to pop all.
    * @param st Stack to pop all from
    * @return ArrayList
    */
    public static ArrayList<Integer> popAll(Stack st) {
	throw new UnsupportedOperationException("TO BE IMPLEMENTED");
    }

    /**
    * Helper method to reverse an array using a Stack.
    * @param vals Array to reverse
    * @return int[]
    */
    public static int[] reverse(int[] vals) {
	throw new UnsupportedOperationException("TO BE IMPLEMENTED");

    }
}