James Pan

原题网址：https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/Given preorder and inorder traversal of a tree, construct the binary tree.Note:You may assume t

原题网址：https://leetcode.com/problems/verify-preorder-sequence-in-binary-search-tree/Given an array of numbers, verify whether it is the correct preorder traversal sequence of a binary search tree.

原题网址：https://leetcode.com/problems/binary-tree-preorder-traversal/Given a binary tree, return the preorder traversal of its nodes' values.For example:Given binary tree {1,#,2,3}, 1

原题网址：https://leetcode.com/problems/verify-preorder-serialization-of-a-binary-tree/One way to serialize a binary tree is to use pre-order traversal. When we encounter a non-null node, we record t