摘要:
Given inorder and postorder traversal of a tree, construct the binary tree.Note:You may assume that duplicates do not exist in the tree./** * Definiti... 阅读全文
摘要:
Given preorder and inorder traversal of a tree, construct the binary tree./** * Definition for binary tree * struct TreeNode { * int val; * Tr... 阅读全文
摘要:
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 contains only n... 阅读全文