Method pop

chapter21/src/main/java/com/seaofnodes/simple/Ary.java:48–50

@return remove and return last element

( )

    }
    /** @return remove and return last element */
    public E pop( ) {
        return _len==0 ? null : _es[--_len];
    }
    @Override public E removeLast() { return pop(); }