12 2014 档案

Hadoop Namenode不能启动
摘要：自己在虚拟机上建立伪分布环境，第一天还一切正常，后来发现每次重新开机以后都不能正常启动，在start-dfs.sh之后jps一下发现namenode不能正常启动，按提示找到logs目录下namenode的启动log发现如下异常。hadoop@cgy-VirtualBox:~$ jps5096 Re... 阅读全文
posted @ 2014-12-31 00:37 birdhack 阅读(5863) 评论(0) 推荐(0)
LeetCode Factorial Trailing Zeroes
摘要：Given an integern, return the number of trailing zeroes inn!.Note:Your solution should be in logarithmic time complexity.Credits:Special thanks to@tsf... 阅读全文
posted @ 2014-12-30 21:14 birdhack 阅读(115) 评论(0) 推荐(0)
LeetCode Excel Sheet Column Number
摘要：Related to questionExcel Sheet Column TitleGiven a column title as appear in an Excel sheet, return its corresponding column number.For example: A ... 阅读全文
posted @ 2014-12-29 22:11 birdhack 阅读(157) 评论(0) 推荐(0)
LeetCode Merge k Sorted Lists
摘要：Mergeksorted linked lists and return it as one sorted list. Analyze and describe its complexity. 1 /** 2 * Definition for singly-linked list. 3 * pu... 阅读全文
posted @ 2014-12-26 23:16 birdhack 阅读(113) 评论(0) 推荐(0)
leetcode Regular Expression Matching
摘要：Implement regular expression matching with support for'.'and'*'.'.' Matches any single character.'*' Matches zero or more of the preceding element.The... 阅读全文
posted @ 2014-12-25 22:02 birdhack 阅读(137) 评论(0) 推荐(0)
LeetCode Median of Two Sorted Arrays
摘要：There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be ... 阅读全文
posted @ 2014-12-23 22:58 birdhack 阅读(129) 评论(0) 推荐(0)
LeetCode Fraction to Recurring Decimal
摘要：Given two integers representing the numerator and denominator of a fraction, return the fraction in string format.If the fractional part is repeating,... 阅读全文
posted @ 2014-12-22 22:13 birdhack 阅读(170) 评论(0) 推荐(0)
LeetCode Excel Sheet Column Title
摘要：Given a positive integer, return its corresponding column title as appear in an Excel sheet.For example: 1 -> A 2 -> B 3 -> C ... 26 ->... 阅读全文
posted @ 2014-12-22 21:03 birdhack 阅读(123) 评论(0) 推荐(0)
LeetCode Majority Element
摘要：Given an array of sizen, find the majority element. The majority element is the element that appears more than⌊ n/2 ⌋times.You may assume that the arr... 阅读全文
posted @ 2014-12-22 20:44 birdhack 阅读(228) 评论(1) 推荐(0)
LeetCode Reverse Nodes in k-Group
摘要：Given a linked list, reverse the nodes of a linked listkat a time and return its modified list.If the number of nodes is not a multiple ofkthen left-o... 阅读全文
posted @ 2014-12-20 00:39 birdhack 阅读(131) 评论(0) 推荐(0)
LeetCode Recover Binary Search Tree
摘要：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) space is ... 阅读全文
posted @ 2014-12-18 23:56 birdhack 阅读(123) 评论(0) 推荐(0)
LeetCode Longest Substring Without Repeating Characters
摘要：Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters fo... 阅读全文
posted @ 2014-12-17 23:15 birdhack 阅读(121) 评论(0) 推荐(0)
leetcode Compare Version Numbers
摘要：Compare two version numbersversion1andversion1.Ifversion1>version2return 1, ifversion11) {11 versionsOne[i]=versionsOne[i].substring(1... 阅读全文
posted @ 2014-12-16 21:55 birdhack 阅读(171) 评论(0) 推荐(0)
LeetCode Path Sum II
摘要：Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.For example:Given the below binary tree andsum =... 阅读全文
posted @ 2014-12-15 23:40 birdhack 阅读(135) 评论(0) 推荐(0)
LeetCode Longest Palindromic Substring
摘要：Given a stringS, find the longest palindromic substring inS. You may assume that the maximum length ofSis 1000, and there exists one unique longest pa... 阅读全文
posted @ 2014-12-14 00:12 birdhack 阅读(148) 评论(0) 推荐(0)
LeetCode Populating Next Right Pointers in Each Node II
摘要：Follow up for problem "Populating Next Right Pointers in Each Node".What if the given tree could be any binary tree? Would your previous solution stil... 阅读全文
posted @ 2014-12-12 00:09 birdhack 阅读(158) 评论(0) 推荐(0)
LeetCode Best Time to Buy and Sell Stock III
摘要：Say you have an array for which theithelement is the price of a given stock on dayi.Design an algorithm to find the maximum profit. You may complete a... 阅读全文
posted @ 2014-12-10 23:34 birdhack 阅读(145) 评论(0) 推荐(0)
LeetCode Binary Tree Maximum Path Sum
摘要：Given a binary tree, find the maximum path sum.The path may start and end at any node in the tree.For example:Given the below binary tree, 1 ... 阅读全文
posted @ 2014-12-09 22:25 birdhack 阅读(99) 评论(0) 推荐(0)
LeetCode Find Peak Element
摘要：A peak element is an element that is greater than its neighbors.Given an input array wherenum[i] ≠ num[i+1], find a peak element and return its index.... 阅读全文
posted @ 2014-12-06 13:19 birdhack 阅读(196) 评论(0) 推荐(0)