Data commit

Task/Fivenum/Kotlin/fivenum.kotlin

@@ -0,0 +1,36 @@
+// version 1.2.21
+
+fun median(x: DoubleArray, start: Int, endInclusive: Int): Double {
+    val size = endInclusive - start + 1
+    require (size > 0) { "Array slice cannot be empty" }
+    val m = start + size / 2
+    return if (size % 2 == 1) x[m] else (x[m - 1] + x[m]) / 2.0
+}
+
+fun fivenum(x: DoubleArray): DoubleArray {
+    require(x.none { it.isNaN() }) { "Unable to deal with arrays containing NaN" }
+    val result = DoubleArray(5)
+    x.sort()
+    result[0] = x[0]
+    result[2] = median(x, 0, x.size - 1)
+    result[4] = x[x.lastIndex]
+    val m = x.size / 2
+    var lowerEnd = if (x.size % 2 == 1) m else m - 1
+    result[1] = median(x, 0, lowerEnd)
+    result[3] = median(x, m, x.size - 1)
+    return result
+}
+
+fun main(args: Array<String>) {
+    var xl = listOf(
+        doubleArrayOf(15.0, 6.0, 42.0, 41.0, 7.0, 36.0, 49.0, 40.0, 39.0, 47.0, 43.0),
+        doubleArrayOf(36.0, 40.0, 7.0, 39.0, 41.0, 15.0),
+        doubleArrayOf(
+             0.14082834,  0.09748790,  1.73131507,  0.87636009, -1.95059594,  0.73438555,
+            -0.03035726,  1.46675970, -0.74621349, -0.72588772,  0.63905160,  0.61501527,
+            -0.98983780, -1.00447874, -0.62759469,  0.66206163,  1.04312009, -0.10305385,
+             0.75775634,  0.32566578
+        )
+    )
+    xl.forEach { println("${fivenum(it).asList()}\n") }
+}