Data update

Task/Averages-Simple-moving-average/Pluto/averages-simple-moving-average.pluto

@@ -0,0 +1,24 @@
+local fmt = require "fmt"
+
+local function sma(period)
+    local i = 0
+    local sum = 0
+    local storage = {}
+    return function(input)
+        if #storage < period then
+            sum += input
+            storage:insert(input)
+        end
+        sum += input - storage[i + 1]
+        storage[i + 1] = input
+        i = (i + 1) % period
+        return sum / #storage
+    end
+end
+
+local sma3 = sma(3)
+local sma5 = sma(5)
+print("  x     sma3   sma5")
+for {1, 2, 3, 4, 5, 5, 4, 3, 2, 1} as x do
+    fmt.print("%5.3f  %5.3f  %5.3f", x, sma3(x), sma5(x))
+end