【题目】
Given a 2D board and a word, find if the word exists in the grid.
The word can be constructed from letters of sequentially adjacent cell, where "adjacent" cells are those horizontally or ...
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其他好文 时间:
2015-05-19 19:13:24
阅读次数:
121
【题目】
Given a 2D board and a list of words from the dictionary, find all words in the board.
Each word must be constructed from letters of sequentially adjacent cell, where "adjacent" cells are...
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其他好文 时间:
2015-05-19 19:10:30
阅读次数:
214
查询及删除重复记录的方法 (一) 1、查找表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断 select * from people where peopleId in (select peopleId from people group by peopleId havi...
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数据库 时间:
2015-05-19 18:39:14
阅读次数:
153
题目:Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in...
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其他好文 时间:
2015-05-19 18:09:23
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109
数据挖掘测试实例用户收视习惯聚类分析用户收视习惯在不同的小时段,不同的星期,会呈现不一样的特色,我们现在要做的就是将用户IPTV数据按照每小时收视时长进行聚类分析测试样本:2013年6月6日(星期四,非假日)南京地区当天观看过IPTV的用户用户数:269745人数据准备:1.创..
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其他好文 时间:
2015-05-19 16:53:09
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186
题目:The gray code is a binary numeral system where two successive values differ in only one bit.Given a non-negative integernrepresenting the total num...
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编程语言 时间:
2015-05-19 12:08:38
阅读次数:
230
Oracle执行计划根据索引的类型与where限制条件的不同,有5种类型的索引扫描,分别是:索引唯一扫描(index unique scan),索引范围扫描(index range scan),索引全扫描(index full scan),索引快速扫描(index fast full scan)索引跳跃式扫描 (index skip scan)。
1、索引唯一扫描(index uniq...
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数据库 时间:
2015-05-19 10:42:28
阅读次数:
208
Problem:
Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules.
The Sudoku board could be partially filled, where empty cells are filled with the character '.'.
A p...
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编程语言 时间:
2015-05-19 00:53:17
阅读次数:
188
Given a 2D board and a word, find if the word exists in the grid.The word can be constructed from letters of sequentially adjacent cell, where "adjace...
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编程语言 时间:
2015-05-19 00:25:26
阅读次数:
210
Last night you robbed a bank but couldn’t escape and when you just got outside today, the police started chasing you. The city, where you live in, consists of some junctions which are connected by some...
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其他好文 时间:
2015-05-18 23:07:07
阅读次数:
237