How to resolve the algorithm Averages/Mean time of day step by step in the 11l programming language

Published on 12 May 2024 09:40 PM
#11l

How to resolve the algorithm Averages/Mean time of day step by step in the 11l programming language

Table of Contents

Problem Statement

A particular activity of bats occurs at these times of the day: Using the idea that there are twenty-four hours in a day, which is analogous to there being 360 degrees in a circle, map times of day to and from angles; and using the ideas of Averages/Mean angle compute and show the average time of the nocturnal activity to an accuracy of one second of time.

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Step by Step solution about How to resolve the algorithm Averages/Mean time of day step by step in the 11l programming language

Source code in the 11l programming language

F mean_angle(angles)
   V x = sum(angles.map(a -> cos(radians(a)))) / angles.len
   V y = sum(angles.map(a -> sin(radians(a)))) / angles.len
   R degrees(atan2(y, x))

F mean_time(times)
   V t = (times.map(time -> time.split(‘:’)))
   V seconds = (t.map(hms -> (Float(hms[2]) + Int(hms[1]) * 60 + Int(hms[0]) * 3600)))
   V day = 24 * 60 * 60
   V to_angles = seconds.map(s -> s * 360.0 / @day)
   V mean_as_angle = mean_angle(to_angles)
   V mean_seconds = round(mean_as_angle * day / 360.0)
   I mean_seconds < 0
      mean_seconds += day
   V h = mean_seconds I/ 3600
   V m = mean_seconds % 3600
   V s = m % 60
   m = m I/ 60
   R ‘#02:#02:#02’.format(h, m, s)

print(mean_time([‘23:00:17’, ‘23:40:20’, ‘00:12:45’, ‘00:17:19’]))

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