【题目描述】There is an integer array which has the following features:·The numbers in adjacent positions are different.·A[0] < A[1] && A[A.length - 2] > A[A.length - 1].We define a position P
【题目描述】The code base version is an integer start from 1 to n. One day, someone committed a bad version in the code case, so it caused this version and the following versions are all failed in the unit
【题目描述】Given preorder and inorder traversal of a tree, construct the binary tree.Notice:You may assume that duplicates do not exist in the tree.根据前序遍历和中序遍历树构造二叉树.注意：你可以假设树中不存在相同数值的节点【题目链接】www.lintcode.
【题目描述】Given inorder and postorder traversal of a tree, construct the binary tree.Notice:You may assume that duplicates do not exist in the tree.根据中序遍历和后序遍历树构造二叉树注意:你可以假设树中不存在相同数值的节点【题目链接】http://www.li
我在Google的这次面试持续了一个多月，虽然最后以失败告终，但是客观评价我觉得总体上面试难度不大，面试结束后我的自我感觉还不错，没想到最后挂掉了。可能因为一些其他的因素导致我落选了吧，我很想再打电话过去问问原因。我进行了三轮电话面试，每轮的面试官都会出一道算法题。大部分人的电面都是2轮，但是因为我挂了一轮，HR给我加面了一轮电面。无奈最后还是挂掉了。电面1先是进行了自我介绍，然后对简历上的一些细
前不久参加了Facebook的SDE面试，很遗憾失败了，不过还是有些经验能分享的。这次面试一共面试了4轮。Onsite1一面还比较顺利，先是让我进行了自我介绍，然后谈了谈之前的项目经历，后面就直接进行coding了。1.电话号码排列 - 给定一个数字字符串，返回数字可能代表的所有可能的字母组合。一面结束随后便被通知可以进行第二轮面试了。Onsite2二面感觉也比较简单，问了两个算法题。1.给出若干
【题目描述】Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and alternate between).给出一棵二叉树，返回其节点值的锯齿形层次遍历（先从
Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root).给出一棵二叉树，返回其节点值从底向上的层次序遍历（按从叶节点所在层到根节点所在的层遍历，然后逐层从左往右遍历）
【题目描述】Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level).给出一棵二叉树，返回其节点值的层次遍历（逐层从左往右访问）【题目链接】www.lintcode.com/en/problem/binary-tree-le
【题目描述】Given a binary tree, return the postorder traversal of its nodes' values.给出一棵二叉树，返回其节点值的后序遍历。【题目链接】www.lintcode.com/en/problem/binary-tree-postorder-traversal/【题目解析】二叉树后序遍历。刚接触leetcode时也做过这道题，用了
【题目描述】Given a binary tree, return the inorder traversal of its nodes' values.给出一棵二叉树,返回其中序遍历【题目链接】www.lintcode.com/en/problem/binary-tree-inorder-traversal/【题目解析】递归版最好理解，递归调用时注意返回值和递归左右子树的顺序即可。迭代版使用辅助
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