Initial data commit

Task/Repeat-a-string/Swift/repeat-a-string-3.swift

@@ -0,0 +1,19 @@
+extension String {
+  // Slower version
+  func repeatString(n: Int) -> String {
+    return Array(count: n, repeatedValue: self).joinWithSeparator("")
+  }
+
+  // Faster version
+  // benchmarked with a 1000 characters and 100 repeats the fast version is approx 500 000 times faster :-)
+  func repeatString2(n:Int) -> String {
+    var result = self
+    for _ in 1 ..< n {
+      result.appendContentsOf(self)   // Note that String.appendContentsOf is up to 10 times faster than "result += self"
+    }
+    return result
+  }
+}
+
+print( "ha".repeatString(5) )
+print( "he".repeatString2(5) )