Archive, multitagging, cleanup

Cleaned up the current snippets for consistency and minor problems, added multiple tags to most of them, archived a few.

snippets/quickSort.md

@@ -1,23 +0,0 @@
-### quickSort
-
-QuickSort an Array (ascending sort by default).
-
-Use recursion. 
-Use `Array.filter` and spread operator (`...`) to create an array that all elements with values less than the pivot come before the pivot, and all elements with values greater than the pivot come after it. 
-If the parameter `desc` is truthy, return array sorts in descending order.
-
-```js
-const quickSort = ([n, ...nums], desc) =>
-  isNaN(n)
-    ? []
-    : [
-        ...quickSort(nums.filter(v => (desc ? v > n : v <= n)), desc),
-        n,
-        ...quickSort(nums.filter(v => (!desc ? v > n : v <= n)), desc)
-      ];
-```
-
-```js
-quickSort([4, 1, 3, 2]); // [1,2,3,4]
-quickSort([4, 1, 3, 2], true); // [4,3,2,1]
-```