[HAI] week3 intersection array

https://www.interviewbit.com/problems/intersection-of-sorted-arrays/

lib/intersectionSortedArray/intersectionSortedArray.test.ts

@@ -0,0 +1,13 @@
+import { describe, it, expect } from "vitest";
+import { intersectionSortedArray } from "./intersectionSortedArray.ts";
+
+describe("intersectionSortedArray", () => {
+
+  it("[1,2,3,3,4,5,6] [3,3,5] => [3,3,5]", () => {
+    expect(intersectionSortedArray([1, 2, 3, 3, 4, 5, 6], [3, 3, 5])).toEqual([3, 3, 5]);
+  });
+
+  it("[1,2,3,4,5,6] [3,5] => [3,5]", () => {
+    expect(intersectionSortedArray([1, 2, 3, 4, 5, 6], [3, 5])).toEqual([3, 5]);
+  });
+});