Data commit

Task/Population-count/Scala/population-count.scala

@@ -0,0 +1,19 @@
+import java.lang.Long.bitCount
+
+object PopCount extends App {
+  val nNumber = 30
+
+  def powersThree(start: Long): LazyList[Long] = start #:: powersThree(start * 3L)
+
+  println("Population count of 3ⁿ :")
+  println(powersThree(1L).map(bitCount).take(nNumber).mkString(", "))
+
+  def series(start: Long): LazyList[Long] = start #:: series(start + 1L)
+
+  println("Evil numbers:")
+  println(series(0L).filter(bitCount(_) % 2 == 0).take(nNumber).mkString(", "))
+
+  println("Odious numbers:")
+  println(series(0L).filter(bitCount(_) % 2 != 0).take(nNumber).mkString(", "))
+
+}