PAT 1043 Is It a Binary Search Tree (25分) 由前序遍历得到二叉搜索树的后序遍历
PAT 1043 Is It a Binary Search Tree (25分) 由前序遍历得到二叉搜索树的后序遍历
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A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties: