feat(day22): deal into new deck

Author: coderbyheart

day22/cardshuffle.spec.ts

@@ -0,0 +1,18 @@
+import { dealIntoNewStack } from './cardshuffle'
+
+describe('Card Shuffle', () => {
+	test('deal 10 cards into a new deck', () => {
+		expect(dealIntoNewStack([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])).toEqual([
+			9,
+			8,
+			7,
+			6,
+			5,
+			4,
+			3,
+			2,
+			1,
+			0,
+		])
+	})
+})

day22/cardshuffle.ts

@@ -0,0 +1,3 @@
+export const dealIntoNewStack = (deck: number[]): number[] => [
+	...deck.reverse(),
+]