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Averages/Simple moving average: Difference between revisions
→{{header|Common Lisp}}
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Line 926:
(setf pointer (rest pointer)) ; advance pointer
(/ sum (min count period))))</lang>
=={{header|Crystal}}==
<lang ruby>def sma(n) Proc(Float64, Float64)
a = Array(Float64).new
->(x : Float64) {
a.shift if a.size == n
a.push x
a.sum / a.size.to_f
}
end
sma3, sma5 = sma(3), sma(5)
# Copied from the Ruby solution.
(1.upto(5).to_a + 5.downto(1).to_a).each do |n|
printf "%d: sma3 = %.3f - sma5 = %.3f\n", n, sma3.call(n.to_f), sma5.call(n.to_f)
end</lang>
<pre>
1: sma3 = 1.000 - sma5 = 1.000
2: sma3 = 1.500 - sma5 = 1.500
3: sma3 = 2.000 - sma5 = 2.000
4: sma3 = 3.000 - sma5 = 2.500
5: sma3 = 4.000 - sma5 = 3.000
5: sma3 = 4.667 - sma5 = 3.800
4: sma3 = 4.667 - sma5 = 4.200
3: sma3 = 4.000 - sma5 = 4.200
2: sma3 = 3.000 - sma5 = 3.800
1: sma3 = 2.000 - sma5 = 3.000
</pre>
=={{header|D}}==
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