在链式存储结构条件下实现层次遍历二叉树的各个节点的操作。-Storage structure in the chain under the conditions of the various node-level binary tree traversal operation.

在链式结构存储条件下用结构体指针实现二叉树各个节点的修改操作。-Storage conditions in the chain structure pointers with a binary tree structure modification operations of each node.