Data commit

Task/Happy-numbers/Groovy/happy-numbers.groovy

@@ -0,0 +1,15 @@
+Number.metaClass.isHappy = {
+    def number = delegate as Long
+    def cycle = new HashSet<Long>()
+    while (number != 1 && !cycle.contains(number)) {
+        cycle << number
+        number = (number as String).collect { d = (it as Long); d * d }.sum()
+    }
+    number == 1
+}
+
+def matches = []
+for (int i = 0; matches.size() < 8; i++) {
+    if (i.happy) { matches << i }
+}
+println matches