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hive on tez sql 优化
selectt.idend_usr_id,t.end_user_nameend_usr_name,t.end_user_real_nameend_usr_nknm,t.end_user_passwordend_usr_pswd,t.end_user_birthdayend_usr_bthd,t.mobilemobl_num,t.phonephone_num,t.valid_mobile_phone_numbindg_mobl_num,t.end_user_emailend_usr_email,substr(t..
分类:数据库   时间:2015-05-06 18:22:57    阅读次数:458
【leetcode】Validate Binary Search Tree(middle)
Given a binary tree, determine if it is a valid binary search tree (BST).Assume a BST is defined as follows:The left subtree of a node contains only n...
分类:其他好文   时间:2015-05-06 14:40:34    阅读次数:97
【leetcode with java】32 Longest Valid Parentheses O(n)
这个题目leetcode上提示用动态规划,但是那样要O(n^2)。我自己想出了一个O(n)的算法,并提交通过。【题目】Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring. For "((...
分类:编程语言   时间:2015-05-06 11:00:58    阅读次数:123
两个字符串是变位词
写出一个函数 anagram(s, t) 去判断两个字符串是否是颠倒字母顺序构成的 样例 给出 s="abcd",t="dcab",返回 true python:先排序后比较 class Solution: """ @param s: The first string @param b: The second string @retu...
分类:其他好文   时间:2015-05-06 09:21:10    阅读次数:137
Evaluate Reverse Polish Notation——LeetCode
Evaluate the value of an arithmetic expression inReverse Polish Notation.Valid operators are+,-,*,/. Each operand may be an integer or another express...
分类:其他好文   时间:2015-05-05 23:46:55    阅读次数:180
[LeetCode 125] Valid Palindrome
https://leetcode.com/problems/valid-palindrome/ Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring...
分类:其他好文   时间:2015-05-05 12:13:38    阅读次数:94
LeetCode 20 Valid Parentheses 括号匹配问题
题目: Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the correct order, "()" and "()[]{}" are...
分类:其他好文   时间:2015-05-05 10:35:05    阅读次数:144
Xcode设置项之Architectures和Valid Architectures
iPhone指令集本文所讲的内容都是围绕iPhone的CPU指令集(想了解ARM指令集的同学请点击这里),现在先说说不同型号的iPhone都使用的是什么指令集:ARMv8/ARM64=iPhone5s,iPadAir,RetinaiPadMiniARMv7s=iPhone5,iPhone5c,iPa...
分类:其他好文   时间:2015-05-04 23:51:50    阅读次数:214
CSU 1563: Lexicography (数学计数问题)
1563: Lexicography Time Limit: 1 Sec  Memory Limit: 128 MB Submit: 342  Solved: 111 [Submit][Status][Web Board] Description An anagram of a string is any string that can be formed using the...
分类:其他好文   时间:2015-05-04 22:18:39    阅读次数:128
UVALive6814 Lexicography
An anagram of a string is any string that can be formedusing the same letters as the original. (We consider the original string ananagram of itself as well.) For example, the string ACM has thefollow...
分类:其他好文   时间:2015-05-04 22:13:13    阅读次数:277
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