Object[] temp = new Object[init_size*((rung/init_size)+1)];
System.arraycopy(struts, 0, temp, 0, struts.length);
struts = temp;
Object[] temp = new Object[init_size*((rung/init_size)+1)];
System.arraycopy(struts, 0, temp, 0, struts.length);
struts = temp;