摘要：
原题链接：https://leetcode.com/problems/binary-tree-right-side-view/题意描述：Given a binary tree, imagine yourself standing on therightside of it, return the v... 阅读全文
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[LeetCode]Binary Tree Preorder Traversal
2014-03-14 00:20 by 庸男勿扰, 191 阅读, 收藏,
摘要：
原题链接：http://oj.leetcode.com/problems/binary-tree-preorder-traversal/题意描述：Given a binary tree, return thepreordertraversal of its nodes' values.For example:Given binary tree{1,#,2,3}, 1 \ 2 / 3return[1,2,3].Note:Recursive solution is trivial, could you do it iteratively?题解： 裸的二叉树遍历，没什么... 阅读全文
[LeetCode]Linked List Cycle II
2014-03-14 17:12 by 庸男勿扰, 183 阅读, 收藏,
摘要：
原题链接：http://oj.leetcode.com/problems/linked-list-cycle-ii/题意描述：Given a linked list, return the node where the cycle begins. If there is no cycle, returnnull.Follow up:Can you solve it without using extra space?题解： 这道题的v1版本是判断一个单链表是否有环，当时我们采用的是快慢指针的方法。传送门：http://www.cnblogs.com/codershell/p/3600100.. 阅读全文
[LeetCode]Reverse Integer
2014-03-14 23:53 by 庸男勿扰, 175 阅读, 收藏,
摘要：
原题链接：http://oj.leetcode.com/problems/reverse-integer/题意描述：Reverse digits of an integer.Example1:x = 123, return 321Example2:x = -123, return -321click to show spoilers.Have you thought about this?Here are some good questions to ask before coding. Bonus points for you if you have already thought thro 阅读全文
[LeetCode]Minimum Path Sum
2014-03-14 16:06 by 庸男勿扰, 138 阅读, 收藏,
摘要：
原题链接：http://oj.leetcode.com/problems/minimum-path-sum/题意描述：Given amxngrid filled with non-negative numbers, find a path from top left to bottom right whichminimizesthe sum of all numbers along its path.Note:You can only move either down or right at any point in time.题解： 这是提到基本的动态规划题，转移方程为：dp[i][j] . 阅读全文
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