update snippets 32-47

snippets/dropElements.md

@@ -10,5 +10,8 @@ const dropElements = (arr, func) => {
   while (arr.length > 0 && !func(arr[0])) arr = arr.slice(1);
   return arr;
 };
-// dropElements([1, 2, 3, 4], n => n >= 3) -> [3,4]
+```
+
+```js
+dropElements([1, 2, 3, 4], n => n >= 3) -> [3,4]
 ```