在java开发中碰到了有些字符串是重复的,如果在进行业务处理要全部遍历太对的数据就会重复,所以在进行业务处理前进行一个去重操作。
这里由于业务需要所以先将字符串转化为string数组,使用split分割,然后将string数组一个个放到list里(list的remove可以将你不要的字符串删除掉,代参数的哦)
可以看到我使用的是list,在list里包含了一个contains函数,表示...
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编程语言 时间:
2015-08-21 21:28:11
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169
nparticipants of the competition were split intomteams in some manner so that each team has at least one participant. After the competition each pair ...
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其他好文 时间:
2015-08-21 21:14:01
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128
Time Limit:1000MS Memory Limit:262144KB 64bit IO Format:%I64d & %I64uDescriptionn participants of the competition were split into m teams in some mann...
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其他好文 时间:
2015-08-21 21:13:35
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138
原题:Descriptionnparticipants of the competition were split intomteams in some manner so that each team has at least one participant. After the competit...
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其他好文 时间:
2015-08-21 21:10:32
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155
B -BTime Limit:1000MSMemory Limit:262144KB64bit IO Format:%I64d & %I64uDescriptionnparticipants of the competition were split intomteams in some manne...
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其他好文 时间:
2015-08-21 21:08:14
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nparticipants of the competition were split intomteams in some manner so that each team has at least one participant. After the competition each pair ...
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其他好文 时间:
2015-08-21 21:03:46
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165
Descriptionnparticipants of the competition were split intomteams in some manner so that each team has at least one participant. After the competition...
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其他好文 时间:
2015-08-21 20:52:39
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194
1.用dir命令可以查看一个对象的所有属性:s='How are you' #s 被赋值后就是一个字符串类型的变量l=s.split() #l是一个list类型的变量dir(s)dir(l)2.创建类class Myclass: pass #pass语句表示...
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编程语言 时间:
2015-08-21 13:15:05
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144
You've got array a[1],?a[2],?...,?a[n], consisting of
n integers. Count the number of ways to split all the elements of the array into three contiguous parts so that the sum of elements in each part ...
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其他好文 时间:
2015-08-21 11:21:55
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194
作用:
1、将输入切分成split,确定split大小,map个数。 由getSplits方法实现。
2、为mapper提供输入数据,key/value形式。getRecordReader方法
核心算法:
1、文件切分算
作用:确定split个数。
概念:
globalSize: totalsize/numSplits ;
minSize: InputSplit 最小值 配...
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其他好文 时间:
2015-08-19 23:45:56
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168