skycore

摘要： 题目描述:(链接)Given a binary tree, flatten it to a linked list in-place.For example,Given 1 / \ 2 5 / \ \ 3 4 6The fl... 阅读全文

摘要： 题目描述:(链接)Given a binary tree, determine if it is height-balanced.For this problem, a height-balanced binary tree is defined as a binary tree in which ... 阅读全文

摘要： 题目描述:(链接)Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).For example, this binary tree is symmetric: ... 阅读全文

摘要： 题目解析:(链接)Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the giv... 阅读全文

摘要： 题目描述:(链接)Given two binary trees, write a function to check if they are equal or not.Two binary trees are considered equal if they are structurally ide... 阅读全文

摘要： 题目描述:(链接)Two elements of a binary search tree (BST) are swapped by mistake.Recover the tree without changing its structure.Note:A solution using O(n) ... 阅读全文

摘要： 题目解析:(链接)Given a binary tree, return thezigzag level ordertraversal of its nodes' values. (ie, from left to right, then right to left for the next lev... 阅读全文

摘要： 题目描述:(链接)Given a binary tree, return thebottom-up level ordertraversal of its nodes' values. (ie, from left to right, level by level from leaf to root... 阅读全文

摘要： 题目描述:(链接)Given a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from left to right, level by level).For example:Given binary t... 阅读全文

摘要： 题目描述:(链接)Given a binary tree, return thepostordertraversal of its nodes' values.For example:Given binary tree{1,#,2,3}, 1 \ 2 / 3return[... 阅读全文