在计算机科学中，二叉树是每个节点最多有两个子树的树结构。通常子树被称作左子树和右子树。二叉树常被用于实现二叉查找树和二叉堆。该算法通过输入前序和中序生成二叉树(In computer science, a two tree is a tree structure with a maximum of two subtrees for each node. Usually the subtrees are called the left subtree and the right subtree.