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public interface MyList<E> extends java.lang.Iterable<E> {

/** Add a new element at the end of this list */

public void add(E e);

/** Add a new element at the specified index in this list */

public void add(int index, E e);

/** Clear the list */

public void clear();

/** Return true if this list contains the element */

public boolean contains(E e);

/** Return the element from this list at the specified index */

public E get(int index);

/** Return the index of the first matching element in this list.

* Return -1 if no match. */

public int indexOf(E e);

/** Return true if this list doesn't contain any elements */

public boolean isEmpty();

/** Return the index of the last matching element in this list

* Return -1 if no match. */

public int lastIndexOf(E e);

/** Remove the first occurrence of the element e from this list.

* Shift any subsequent elements to the left.

* Return true if the element is removed. */

public boolean remove(E e);

/** Remove the element at the specified postion in this list.

* Shift any subsequent element to the left

* Return the element that was removed from the list. */

public E remove(int index);

/** Replace the element at the specified position in this list

* with the specified element and return the old element. */

public Object set(int index, E e);

/** Return the number of elements in this list */

public int size();

}