1 Combination Sum
Given a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T. The same repeated number may be chosen from C...
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编程语言 时间:
2015-05-16 12:00:54
阅读次数:
139
题目:Given preorder and inorder traversal of a tree, construct the binary tree.Note:You may assume that duplicates do not exist in the tree.代码:/** * Def...
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其他好文 时间:
2015-05-16 11:53:57
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141
--字符替换select translate('abcdefgabcdef','abc','123') from dual;select translate('agbfceddeafbgc','abc','123') from dual;--字符串替换select replace('abcdaefg...
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数据库 时间:
2015-05-16 11:53:21
阅读次数:
202
Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path.N...
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编程语言 时间:
2015-05-16 11:45:30
阅读次数:
149
SQL:删除重复数据,只保留一条用SQL语句,删除掉重复项只保留一条在几千条记录里,存在着些相同的记录,如何能用SQL语句,删除掉重复的呢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 (se...
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数据库 时间:
2015-05-16 10:27:29
阅读次数:
143
两个或多个表关联,没写where条件,大量的笛卡尔值,严重时会导致数据库有问题。select * from a, b left join c on b.id = c.id left join d on c.id = d.id多表关联查询,where条件使用各种函数,导致索引无效。数据量如果打起来以后...
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数据库 时间:
2015-05-16 10:25:29
阅读次数:
148
点击章节练习:var tmplm:Tlistboxitem;begin dm.FDQTMP.SQL.Clear; dm.FDQTMP.SQL.Add('select GSESSON from TSquestions where GLESSON=:ggl group by GSESSON'); ...
Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below.For example, given the fol...
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其他好文 时间:
2015-05-16 06:45:28
阅读次数:
126
1.where is sublime CLI/Applications/Sublime Text.app/Contents/SharedSupport/bin/subl2. run sublime CLI from terminalopen "/Applications/Sublime Text.a...
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系统相关 时间:
2015-05-16 06:43:59
阅读次数:
188
内容:在Java中利用Callable进行带返回结果的线程计算,利用Future表示异步计算的结果,分别计算不同范围的Long求和,类似的思想还能够借鉴到需要大量计算的地方。
public class Sums {
public static class Sum implements Callable {
private final Long from;
private fi...
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编程语言 时间:
2015-05-16 01:33:29
阅读次数:
149