diff --git a/'RERUN' button b/'RERUN' button
new file mode 100644
index 0000000..348a78d
--- /dev/null
+++ b/'RERUN' button	
@@ -0,0 +1,15 @@
+
+function repeat_string(string, count) 
+  {
+    if ((string == null) || (count < 0) || (count === Infinity) || (count == null))
+      {
+        return('Error in string or count.');
+      }
+        count = count | 0; // Floor count.
+    return new Array(count + 1).join(string);
+  }
+
+console.log(repeat_string('a', 4));
+console.log(repeat_string('a'));
+console.log(repeat_string('a', -2));
+console.log(repeat_string('a', Infinity));