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【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:2014-07-17 00:33:43    阅读次数:218
Tuples are immutable
A tuple is a sequence of values. The values can be any type, and they are indexed by integers, so in that respect tuples are a lot like lists. The imp...
分类:其他好文   时间:2014-07-16 18:17:44    阅读次数:213
python 实现求和、计数、最大最小值、平均值、中位数、标准偏差、百分比。
import sys class Stats: def __init__(self, sequence): # sequence of numbers we will process # convert all items to floats for numeri...
分类:编程语言   时间:2014-07-16 18:06:48    阅读次数:257
Python基础(二)
Python最基本的数据结构是序列(sequence),序列中的每个元素被分以以0开头的唯一的一个id号。 Python中有6种内建的序列:列表,元组,字符串,Unicode字符串,buffer对象和xrange对象。 下面是一个使用列表的例子: >>> edward = ['Edward Gum....
分类:编程语言   时间:2014-07-16 15:49:59    阅读次数:297
Guid和Sequence做主键的比较
记得A项目组是一个物流管理系统,后台采用了Oracle数据库。在系统中的核心表托运单表中,关于主键采用何种数据类型,是 sequence 还是用GUID , 大家起了争论。从网络搜索得到的结论看,一般的意见总结为:1. SYS_GUID()比sequence复杂;2.SYS_GUID做主键,则表、....
分类:其他好文   时间:2014-07-16 11:55:08    阅读次数:233
hoj 2275 Number sequence
Number sequence Given a number sequence which has N element(s), please calculate the number of different collocation for three number Ai, Aj, Ak, which satisfy that Ai Ak and i Input The fi...
分类:其他好文   时间:2014-07-16 09:51:23    阅读次数:201
POJ 2299 Ultra-QuickSort
Ultra-QuickSort Description In this problem, you have to analyze a particular sorting algorithm. The algorithm processes a sequence of n distinct integers by swapping two adjacent sequence eleme...
分类:其他好文   时间:2014-07-16 09:00:13    阅读次数:240
Lists and strings
A string is a sequence of characters and a list is a sequence of values, but a list of characters is not the same as a string. To convert from a strin...
分类:其他好文   时间:2014-07-15 09:00:12    阅读次数:244
python中有趣的函数
filter(function, sequence):对sequence中的item依次执行function(item),将执行结果为True的item组成一个List/String/Tuple(取决于sequence的类型)返回:>>> def f(x): return x % 2 != 0 an...
分类:编程语言   时间:2014-07-15 08:41:24    阅读次数:292
Ugly Numbers(1.5.8)
Time Limit:1000MS     Memory Limit:10000KB     64bit IO Format:%I64d & %I64u Submit Status Description Ugly numbers are numbers whose only prime factors are 2, 3 or 5. The sequence  ...
分类:其他好文   时间:2014-07-14 14:03:02    阅读次数:206
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