按用户的年龄分组用户 [英] Group users by age for a range

问题描述

我有一些数据，我需要做一些统计。我需要按年龄分组用户。

  var byAge = displayResult.GroupBy（x => x.Age）; 
  

我可以像上面那样做。然而，这给了我19，20岁，21岁等我想要的是年龄10岁组，如10至20岁，20岁以上的用户

30岁，30-40岁等。

我怎样才能得到这个？

解决方案

 <$ c $ 
 
 c> var byAge = displayResult.GroupBy（x => 10 *（x.Age / 10））; 
  

所有介于0和10之间的数字都将在存储区0中。
从10到20将在 20 之下的关键字 10 ，从20到30之间，等等开。

I have some data which i need to make some statistics. I need to group the users by age.

var byAge = displayResult.GroupBy(x => x.Age);

Which i can do as above. However, this gives me ages like 19, 20, 21 etc. what I want is grouping age by 10 years, such as

users between 10-20 yearsold, 20-30 years old, 30-40 years old etc.

How can i get that?

解决方案

You can truncate the trailing digit by dividing by ten using integer division, and then multiplying back by ten.

 var byAge = displayResult.GroupBy(x => 10*(x.Age/10));

Everyone between 0, inclusive, and 10, exclusive, will be in the bucket 0. from 10 to 20 will be under the key 10, from 20 to 30 - under the key 20, and so on.

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