Method add

chapter21/src/main/java/com/seaofnodes/simple/Ary.java:57–61

Add element in amortized constant time @param e Element to add at end of list @return true

( E e )

     *  @param e Element to add at end of list
     *  @return true */
    public boolean add( E e ) {
        if( _len >= _es.length ) _es = Arrays.copyOf(_es,Math.max(1,_es.length<<1));
        _es[_len++] = e;
        return true;
    }

    /** Fast, constant-time, element removal.  Does not preserve order
     *  @param i element to be removed