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Permutation Sequence
The set[1,2,3,…,n]contains a total ofn! unique permutations.By listing and labeling all of the permutations in order,We get the following sequence (ie...
分类:其他好文   时间:2014-06-29 06:03:23    阅读次数:260
LeetCode: Permutation Sequcence 题解
The set[1,2,3,…,n]contains a total ofn! unique permutations.By listing and labeling all of the permutations in order,We get the following sequence (ie...
分类:其他好文   时间:2014-06-21 13:18:17    阅读次数:218
A string is a sequence
A string is a sequence of characters. You can access the characters one at a time with the bracket operator. The second statement selects ch...
分类:其他好文   时间:2014-06-21 08:19:51    阅读次数:197
Leetcode Word Break
Given a stringsand a dictionary of wordsdict, determine ifscan be segmented into a space-separated sequence of one or more dictionary words.For exampl...
分类:其他好文   时间:2014-06-21 07:30:55    阅读次数:212
Oracle自增列创建方法
Oracle没有自增字段这样的功能,但是通过触发器(trigger)和序列(sequence)可以实现。先建一个测试表了:create table userlogin( id number(6) not null, name varchar2(30) not null primary key)tab...
分类:数据库   时间:2014-06-20 18:51:30    阅读次数:277
[LeetCode] Word Break
Given a string s and a dictionary of words dict, determine if s can be segmented into a space-separated sequence of one or more dictionary words.For e...
分类:其他好文   时间:2014-06-18 22:11:44    阅读次数:200
[LeetCode] Longest Consecutive Sequence
Given an unsorted array of integers, find the length of the longest consecutive elements sequence.For example,Given[100, 4, 200, 1, 3, 2],The longest ...
分类:其他好文   时间:2014-06-18 17:25:33    阅读次数:155
hibernate annotation 主键生成策略的相关配置
Hibernate 默认总共支持 13 种生成策略 : 1. increment 2. identity 3. sequence 4. hilo 5. seqhilo 6. uuid 7. uuid.hex 8. guid 9. native 10. assigned 11. select 12. f...
分类:系统相关   时间:2014-06-17 22:30:41    阅读次数:450
orcale实现自增列
手动创建了一个表格,但是id字段无法实现自增,查看了一下网上的信息,没有找到满意的答案。一下是自己总结摸索的,仅供参考第一步:手动创建表和列中的字段 (本例中,表明 T_VIDEO,第一个字段:ID)第二步:创建sequence,如图,第三步:创建触发器,如图,触发器的代码如下create or r...
分类:其他好文   时间:2014-06-17 19:52:36    阅读次数:200
UML的基本图(二)
?? Both sequence diagrams and communication diagrams are kinds of interaction diagrams. An interaction diagram shows an interaction, consisting of a set of objects or roles, including the messages ...
分类:其他好文   时间:2014-06-17 19:15:04    阅读次数:186
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