Averages/Mean time of day: Difference between revisions
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→{{header|Sidef}}: minor code simplifications
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Using the '''mean_angle()''' function from: [http://rosettacode.org/wiki/Averages/Mean_angle#Sidef "Averages/Mean angle"]
<lang ruby>func time2deg(t) {
(var m = t.match(/^(\d\d):(\d\d):(\d\d)$/)) || die "invalid time"
var (hh,mm,ss) = m.cap.map{.to_i}...
((hh ~~
(hh*3600 + mm*60 + ss) * 360 / 86400
}
func deg2time(d) {
var sec = ((d % 360) * 86400 / 360)
"%02d:%02d:%02d" % (sec/3600, (sec%3600)/60, sec%60)
}
func mean_time(times) {
deg2time(mean_angle(times.map {|t| time2deg(t)}))
}
say mean_time(["23:00:17", "23:40:20", "00:12:45", "00:17:19"])
{{out}}
<pre>23:47:43</pre>
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