Data commit

Task/Sierpinski-triangle/Scala/sierpinski-triangle-1.scala

@@ -0,0 +1 @@
+scala -e "for(y<-0 to 15){println(\" \"*(15-y)++(0 to y).map(x=>if((~y&x)>0)\"  \"else\" *\")mkString)}"

Task/Sierpinski-triangle/Scala/sierpinski-triangle-2.scala

@@ -0,0 +1,10 @@
+def sierpinski(n: Int) {
+  def star(n: Long) = if ((n & 1L) == 1L) "*" else " "
+  def stars(n: Long): String = if (n == 0L) "" else star(n) + " " + stars(n >> 1)
+  def spaces(n: Int) = " " * n
+  ((1 << n) - 1 to 0 by -1).foldLeft(1L) {
+    case (bitmap, remainingLines) =>
+      println(spaces(remainingLines) + stars(bitmap))
+      (bitmap << 1) ^ bitmap
+  }
+}

Task/Sierpinski-triangle/Scala/sierpinski-triangle-3.scala

@@ -0,0 +1,12 @@
+def printSierpinski(n: Int) {
+  def sierpinski(n: Int): List[String] = {
+    lazy val down = sierpinski(n - 1)
+    lazy val space = " " * (1 << (n - 1))
+    n match {
+      case 0 => List("*")
+      case _ => (down map (space + _ + space)) :::
+                (down map (List.fill(2)(_) mkString " "))
+    }
+  }
+  sierpinski(n) foreach println
+}