时间值数组的Ruby平均值（fixnums） [英] Ruby average value of array of time values (fixnums)

问题描述

要获取平均持续时间，持续时间的格式为1.day，3.months，2weeks。.

Looking to get the average duration, where duration is in the form of 1.day, 3.months, 2.weeks format..

# provided array
a = [1.day, 3.days, 1.week, 4.days]

# desired output
a.average = "3 days"

无论如何，我尝试以几秒钟为单位的结果就是输出。例如：

Any way I have tried results in a number of seconds being the output.. for instance:

a.inject(:+) = "15 days"
a.inject(:+) / a.size = 324000

我看过《 Linguistics gem》，但它只将值输出为数字（十二万四千二百）

I've looked at the Linguistics gem, but it only outputs the value as a number (three hundred and twenty four thousand)

推荐答案

def average_days(a)
  seconds = a.inject(:+) / a.size
  minutes = seconds / 60
  days    = (minutes / 1440).round
  "#{days} days"
end

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