Add the X10 language (http://x10-lang.org/).

samples/X10/MontyPi.x10

@@ -0,0 +1,42 @@
+/*
+ *  This file is part of the X10 project (http://x10-lang.org).
+ *
+ *  This file is licensed to You under the Eclipse Public License (EPL);
+ *  You may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *      http://www.opensource.org/licenses/eclipse-1.0.php
+ *
+ *  (C) Copyright IBM Corporation 2006-2014.
+ */
+
+import x10.array.DistArray_Unique;
+import x10.io.Console;
+import x10.util.Random;
+
+/**
+ * Calculation of an approximation to pi by using a Monte Carlo simulation
+ * (throwing darts into the unit square and determining the fraction that land
+ * in the unit circle).
+ */
+public class MontyPi {
+    public static def main(args:Rail[String]) {
+        if (args.size != 1L) {
+            Console.OUT.println("Usage: MontyPi <number of points>");
+            return;
+        }
+        val N = Long.parse(args(0));
+        val initializer = () => {
+            val r = new Random();
+            var result:Long = 0;
+            for(c in 1..N) {
+                val x = r.nextDouble();
+                val y = r.nextDouble();
+                if (x*x +y*y <= 1.0) result++;
+            }
+            result
+        };
+        val result = new DistArray_Unique[Long](Place.places(), initializer);
+        val pi = (4.0*result.reduce((x:Long,y:Long) => x+y, 0) as Double)/(N*Place.numPlaces());
+        Console.OUT.println("The value of pi is " + pi);
+    }
+}