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Longest Consecutive Sequence
问题描述Given an unsorted array of integers, find the length of the longest consecutive elements sequence. For example,Given [100, 4, 200, 1, 3, 2],The lo...
分类:其他好文   时间:2015-08-04 12:46:55    阅读次数:115
[leedcode 199] Binary Tree Right Side View
Given a binary tree, imagine yourself standing on therightside of it, return the values of the nodes you can see ordered from top to bottom.For exampl...
分类:其他好文   时间:2015-08-03 22:18:49    阅读次数:105
Leetcode-199(Java) Binary Tree Right Side View
Given a binary tree, imagine yourself standing on therightside of it, return the values of the nodes you can see ordered from top to bottom.For exampl...
分类:编程语言   时间:2015-08-03 18:48:01    阅读次数:105
Binary Tree Right Side View
Given a binary tree, imagine yourself standing on therightside of it, return the values of the nodes you can see ordered from top to bottom.For exampl...
分类:其他好文   时间:2015-08-03 01:04:34    阅读次数:104
leetCode 104.Maximum Depth of Binary Tree(二叉树最大深度) 解题思路和方法
Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node. 思路:很基础的一个题,DFS即可。代码如下: /** * Defin...
分类:其他好文   时间:2015-08-01 22:08:25    阅读次数:140
The Longest Increasing Subsequence (LIS)
传送门十分重要的基础DP问题,是学习用各种方式优化DP的一个很好的例子。设DP[i]表示以a[i]结尾的LIS的长度,则状态转移方程为DP[1]=1DP[i] = max{DP[j], j1暴力求解复杂度为O(N^2)。优化1考虑函数f(L):长度为 L 的 Increasing Sequence ...
分类:其他好文   时间:2015-08-01 20:28:08    阅读次数:90
[leetcode 32]Longest Valid Parentheses
Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring. For "(()", the longest valid parentheses substring is "()", ...
分类:其他好文   时间:2015-08-01 10:07:41    阅读次数:107
Maximum Depth of Binary Tree
Given a binary tree, find its maximum depth.The maximum depth is the number of nodes along the longest path from the root node down to the farthest le...
分类:其他好文   时间:2015-07-31 16:08:47    阅读次数:103
LeetCode 14: Longest Common Prefix
Longest Common Prefix Write a function to find the longest common prefix string amongst an array of strings. 求最长公共前缀。 代码如下: class Solution { public: string longestCommonPrefix(vect...
分类:其他好文   时间:2015-07-30 19:28:27    阅读次数:109
leetcode: longest substring without repeating characters
July 16, 2015Problem statement:Longest Substring Without Repeating CharactersRead the blog:http://blog.csdn.net/fightforyourdream/article/details/1786...
分类:其他好文   时间:2015-07-30 14:52:05    阅读次数:109
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