Binary trees are represented by nodes that have a data value and a left and right pointer; however, there are many data structures that require trees with more than just a left and right branch.
描述二叉树(binarytree)的节点有一个数据值、一个左指针和一个右指针；不过，很多数据体要求树不只有一个左分支和一个右分支。
We will introduce Linear Lists, Stacks, Queues, Strings, Binary Trees, Trees and Graphs, which are fundamental data structures.
主要包括的内容有：线性表，栈与队列，字符串，二叉树，树，图。
We will introduce Linear Lists, Stacks, Queues, Strings, Binary Trees, Trees and Graphs, which are fundamental data structures.
主要包括的内容有：线性表，栈与队列，字符串，二叉树，树，图。
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