1数 据 结 构 中 如 何 遍 历 一 个 树我 回 来 之 后 想 到 了   也 许 要 用 到 递 归
不 知 道 还 有 没 有 其 他 方 法 。 。 或 者 是 我 如 果 这 样 回 答 的 话 对 么 ?2 数 据 结 构 中 的 链 表 
 这 个 问 题     应 该 怎 么 回 答 ? 
 我 还 是 得 去 搜 索 一 下   链 表   的 概 念 3  简 单 描 述 一 下   学 校 排 课 系 统 的 实 现 思 路 。 。 。 。 
没 有 思 路 。 。 高 手 说说 4 简 单 描 述 一 下 反 射 。 。 
 我 只 知 道 动 态 获 取 程 序 集 信 息 。 。 。 
 不 晓 得 他 问 这 个 问 题 的 目 的 是 什 么 ?