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B - The Staircases (dp)
One curious child has a set of N little bricks. From these bricks he builds different staircases. Staircase consists of steps of different sizes in a ...
分类:其他好文   时间:2019-05-06 22:04:25    阅读次数:185
线段树 区间合并 F - Sequence operation
F - Sequence operation lxhgww got a sequence contains n characters which are all '0's or '1's. We have five operations here: Change operations: 0 a b ...
分类:其他好文   时间:2019-05-04 21:21:41    阅读次数:165
Android学习(五)
学号 20189214 《Java程序设计》第十周学习总结 教材学习内容总结 偏好 1. 在sharedPreferences包含一个键值对,可以使用contains方法,来判断指定的键是否存在。可以使用getAll方法对所有的键值对获取为一个Map。 2. SettingFragment类是Pre ...
分类:移动开发   时间:2019-05-03 16:37:57    阅读次数:195
java 检查进程是否存在
以nginx进程为例子 ...
分类:编程语言   时间:2019-05-02 23:00:46    阅读次数:236
go语言之字符串、指针、数组切片
一: 字符串 训练: ...
分类:编程语言   时间:2019-05-02 18:42:22    阅读次数:472
LeetCode || Copy List with Random Pointer
A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null. Return a deep copy ...
分类:其他好文   时间:2019-05-02 09:37:35    阅读次数:93
mysql实际碰到问题汇总
问题1:SQLSTATE[42000]: Syntax error or access violation: 1055 Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column ' ...
分类:数据库   时间:2019-04-30 19:46:38    阅读次数:170
Scrapy——settings配置文件
# -*- coding: utf-8 -*- # Scrapy settings for tencent project # # For simplicity, this file contains only settings considered important or # commonly ... ...
分类:其他好文   时间:2019-04-29 23:45:14    阅读次数:258
sql语句中的文本检索
想要对数据库中的表中某个字段的文本进行关键字检索,可以使用CONTAINS字段 Contains语法select * from table_name where contains( fulltext_column, 'search contents')例如: select * from studen ...
分类:数据库   时间:2019-04-29 15:24:25    阅读次数:132
odoo Model字段的参数
odoo Model字段的参数 python class Field(object): """ The field descriptor contains the field definition, and manages accesses and assignments of the corres ...
分类:其他好文   时间:2019-04-28 15:32:33    阅读次数:78
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