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Search Insert Position--LeetCode
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 order. You may assume no duplicates in t...
分类:其他好文   时间:2015-03-30 13:27:14    阅读次数:100
Path Sum II
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 and sum = 22, 5 / \...
分类:其他好文   时间:2015-03-30 13:14:32    阅读次数:89
sql查询
SELECT * from aa WHERE aa not in(2,3) and aa not in(SELECT aa from aa where bb =1 and cc is null);(SELECT * from aa where bb not in (1,2,3)) UNION all...
分类:数据库   时间:2015-03-30 13:07:45    阅读次数:115
ORACLE 关于DELETE操作的一些事
在实际工作中,经常会遇到这样的需求:定期对已经过期的数据进行删除,释放服务器资源。例如,我们定义了一个定时器任务,在凌晨2点开始执行,这个任务就是删除1个月之前的数据,以释放空间。 最初的时候,我们可以这么写: delete from table_name where t_time < to...
分类:数据库   时间:2015-03-30 13:00:05    阅读次数:176
oracle多行合并成一行
在mysql有关键字group_concat提供了类似的功能,在oracle中类似功能关键字是wm_concat.比如我有如下查询数据: 但是我希望能够显示成一行查询出来,结果图如下: 关键sql代码形如:select t.sglcheckid,**wm_concat(t.salemodulename)** from t_item_group_ex t where t.sglchecki...
分类:数据库   时间:2015-03-30 11:24:53    阅读次数:174
LeetCode: Path Sum II 解题报告
Path Sum IIGiven 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 tr...
分类:其他好文   时间:2015-03-30 10:52:04    阅读次数:158
[LeetCode 134] Gas Station
题目链接:gas-station /** * There are N gas stations along a circular route, where the amount of gas at station i is gas[i]. You have a car with an unlimited gas tank and it costs cost[i] of ...
分类:其他好文   时间:2015-03-30 09:25:15    阅读次数:163
Sicily 1422. Table Tennis
1422. Table Tennis Constraints Time Limit: 1 secs, Memory Limit: 32 MB Description There is a rectangular pool table ABCD with side lengths m and n, where m and n are integers with m...
分类:其他好文   时间:2015-03-30 09:20:57    阅读次数:179
Sicily 1936. Knight Moves
1936. Knight Moves Constraints Time Limit: 1 secs, Memory Limit: 32 MB Description A friend of you is doing research on the Traveling Knight Problem (TKP) where you are to find the s...
分类:其他好文   时间:2015-03-30 09:20:21    阅读次数:121
Sicily 2002. Feeding Time
2002. Feeding Time Constraints Time Limit: 1 secs, Memory Limit: 292.96875 MB Description It's Bessie's feeding time, and Farmer John is trying to decide where to put her. FJ has a f...
分类:其他好文   时间:2015-03-30 09:18:39    阅读次数:157
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