September 2017 Update

Task/Averages-Simple-moving-average/Kotlin/averages-simple-moving-average.kotlin

@@ -0,0 +1,19 @@
+// version 1.0.6
+
+fun initMovingAverage(p: Int): (Double) -> Double {
+    if (p < 1) throw IllegalArgumentException("Period must be a positive integer")
+    val list = mutableListOf<Double>()
+    return {
+        list.add(it)
+        if (list.size > p) list.removeAt(0)
+        list.average()
+    }
+}
+
+fun main(args: Array<String>) {
+    val sma4 = initMovingAverage(4)
+    val sma5 = initMovingAverage(5)
+    val numbers = listOf(1.0, 2.0, 3.0, 4.0, 5.0, 5.0, 4.0, 3.0, 2.0, 1.0)
+    println("num\tsma4\tsma5\n")
+    for (number in numbers) println("${number}\t${sma4(number)}\t${sma5(number)}")
+}