@@ -0,0 +1,147 @@
+public int array11(int%5B%5D nums, int index) %7B%0A  if (index == nums.length) return 0;%0A  return (nums%5Bindex%5D == 11 ? 1 : 0) + array11(nums, index+1);%0A%7D%0A

Create array11.java