題目： Given an array of numbers, verify whether it is the correct preorder traversal sequence of a binary search tree. You may assume each number in the sequence is unique. Follow up:Could you do it usi ...
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Given an array of numbers, verify whether it is the correct preorder traversal sequence of a binary search tree. You may assume each number ...
原題鏈接在這里：https://leetcode.com/problems/construct-binary-search-tree-from-preorder-traversal/ 題目： Return the root node of a binary search tree ...
One way to serialize a binary tree is to use pre-order traversal. When we encounter a non-null node, we record the node's value. If it is a null ...
Binary TreeDefinition： at most two children node. Binary Tree Example: 10 ==root / \ 13 ...
Binary Tree Preorder Traversal Given a binary tree, return the preorder traversal of its nodes' values.For example:Given binary tree {1,#,2,3 ...
原題地址：http://oj.leetcode.com/problems/binary-tree-preorder-traversal/ 題意：這題用遞歸比較簡單。應該考察的是使用非遞歸實現二叉樹的先序遍歷。先序遍歷的遍歷順序是：根，左子樹，右子樹。 解題思路：如果樹為下圖： 1 / \ ...
Return the root node of a binary search tree that matches the given preorder traversal. (Recall that a binary search tree is a binary tree where ...
Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as follows: The left subtree of a node ...
