Method insert

chapter21/src/main/java/com/seaofnodes/simple/Ary.java:86–91

Slow, linear-time, element insertion. Preserves order. @param i where to insert @return element inserted

( E e, int i )

     *  @param i where to insert
     *  @return element inserted */
    public E insert( E e, int i ) {
        setLen(_len+1);
        System.arraycopy(_es,i,_es,i+1,_len-i);
        _es[i] = e;
        return e;
    }


    /** Remove all elements */