Hannah N

task-1/count-above-threshold.js

@@ -1 +1,15 @@
-//Your code here
+function countAboveThreshold(numbers, threshold) {
+  let count = 0;
+
+  for (let i = 0; i < numbers.length; i = i + 1) {
+    if (numbers[i] > threshold) {
+      count = count + 1;
+    }
+  }
+
+  return count;
+}
+
+console.log(countAboveThreshold([1, 5, 10, 3], 4)); // returns 2
+console.log(countAboveThreshold([7, 8, 9], 10)); // returns 0
+console.log(countAboveThreshold([], 5)); // returns 0

task-2/calculateAverage.test.js

@@ -0,0 +1,28 @@
+import { describe, test, expect } from "vitest";
+import { calculateAverage } from "./calculateAverage";
+
+describe("calculateAverage checks", () => {
+  test("normal numbers → should give 4 for [2, 4, 6]", () => {
+    expect(calculateAverage([2, 4, 6])).toBe(4);
+  });
+
+  test("one number → should give back the same number", () => {
+    expect(calculateAverage([5])).toBe(5);
+    expect(calculateAverage([0])).toBe(0);
+  });
+
+  test("empty array → should give null", () => {
+    expect(calculateAverage([])).toBe(null);
+  });
+
+  test("has a non array input → should give null", () => {
+    expect(calculateAverage(null)).toBe(null);
+    expect(calculateAverage("hello")).toBe(null);
+    expect(calculateAverage(100)).toBe(null);
+  });
+
+  test("list with non number value → should give null", () => {
+    expect(calculateAverage([1, 2, "hello"])).toBe(null);
+    expect(calculateAverage([1, true, 3])).toBe(null);
+  });
+});