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欧拉计划(python) problem 6
Sum square difference Problem 6 The sum of the squares of the first ten natural numbers is, 12 + 22 + ... + 102 = 385 The square of the sum of the first ten natural numbers is, (1 + 2 + ....
分类:编程语言   时间:2015-01-27 09:34:10    阅读次数:170
欧拉计划(python) problem 9
Special Pythagorean triplet Problem 9 A Pythagorean triplet is a set of three natural numbers, a b c, for which, a2 + b2 = c2 For example, 32 + 42 = 9 + 16 = 25 = 52. There exists exact...
分类:编程语言   时间:2015-01-27 09:32:08    阅读次数:181
poj1845--Sumdiv(数论篇3--真滴是数论啊。。。。)
Sumdiv Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 14953   Accepted: 3680 Description Consider two natural numbers A and B. Let S be the sum of all natural...
分类:其他好文   时间:2015-01-23 09:34:34    阅读次数:236
UVA Multiplying by Rotation
Multiplying by Rotation  Warning: Not all numbers in this problem are decimal numbers! Multiplication of natural numbers in general is a cumbersome operation. In some cases howev...
分类:其他好文   时间:2015-01-18 17:13:10    阅读次数:147
[Elasticsearch] 过滤查询以及聚合(Filtering Queries and Aggregations)
本章翻译自Elasticsearch官方指南的Filtering Queries and Aggregations一章。 过滤查询以及聚合 A natural extension to aggregation scoping is filtering. Because the aggregation operates in the context of the quer...
分类:其他好文   时间:2015-01-16 01:15:49    阅读次数:1158
uva 11038
Problem E: How many 0's?A Benedict monk No. 16 writes down the decimal representations of all natural numbers between and includingmandn,m≤n. How many...
分类:其他好文   时间:2015-01-15 23:30:26    阅读次数:216
SQL:1999基本语法(学习笔记)
SQL:1999基本语法SELECT [DISTINCT] * | 列名称 [AS]别名,........FROM 表名称1 [别名1][CROSS JOIN表名称2 别名2]|[NATURAL JOIN表名称2 别名2][ JOIN表名称2 别名2 USING (关联列名称)][ JOIN表名称2...
分类:数据库   时间:2015-01-10 06:37:14    阅读次数:196
Using SHOW PROCESSLIST and mysqladmin debug Output in Conjunction with SHOW INNODB STATUS
When InnoDB appears hung, I know the natural reaction is to check SHOW ENGINE INNODB STATUS.In fact, it’s the first thing I check when InnoDB tables a...
分类:数据库   时间:2015-01-05 01:51:06    阅读次数:219
Effective Item - 谨慎实现Comparable接口
类实现了Comparable接口就表明类的实例本身具有内在的排序关系(natural ordering)。因此,该类可以与很多泛型算法和集合实现进行协作。而我们之需要实现Comparable接口唯一的方法——compareTo。 以下是相关规则:sgn(x.compareTo(y)) = -sgn....
分类:其他好文   时间:2014-12-30 21:53:27    阅读次数:231
big bang 句子
恶补下英语,不知道以后用不用的上1.reach an impasse: 遭遇窘境2.childhood issues:童年的问题3.be a natural at sth.:擅长做某事4.roll the dice:滚筛子5.be pedantic:迂腐的6.look on the bright s...
分类:其他好文   时间:2014-12-26 00:47:19    阅读次数:276
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