[algo] binarySearch

lib/binarySearch/binarySearch.test.ts

@@ -0,0 +1,14 @@
+import { describe, it, expect } from "vitest";
+import { binarySearch } from "./binarySearch";
+
+describe("binarySearch", () => {
+  let sortedArray = [-12, 1, 4, 6, 22];
+
+  it("binarySearch should return index 2", () => {
+    expect(binarySearch(sortedArray, 4)).toBe(2);
+  });
+
+  it("binarySearch not find number 3 should return -1", () => {
+    expect(binarySearch(sortedArray, 3)).toBe(-1);
+  });
+});