摘要： 1，实例变量，构造器，数组扩展private Object[] contents; private int count; public ArrayBinarySearchTree(Object root) { //Object[] contents = new Object[10]; 悲剧啊！！！！局部变量覆盖了类成员变量 contents = new Object[10]; contents[0] = root; count = 1; } public void expand() { //Object[] larger = new Object[size()*3]; Object[] lar 阅读全文