Add Pow.js (#498)

baciucristian · web-flow · commit 2ebe65baff42 · 2020-12-20T19:08:37.000+05:30
* Add pow.js

* Add tests for Pow.js
diff --git a/Maths/Pow.js b/Maths/Pow.js
@@ -0,0 +1,11 @@
+// Returns the value of x to the power of y
+
+const pow = (x, y) => {
+  let result = 1
+  for (let i = 1; i <= y; i++) {
+    result *= x
+  }
+  return result
+}
+
+export { pow }
diff --git a/Maths/test/Pow.test.js b/Maths/test/Pow.test.js
@@ -0,0 +1,15 @@
+import { pow } from '../Pow'
+
+describe('Pow', () => {
+  it('should return 1 for numbers with exponent 0', () => {
+    expect(pow(2, 0)).toBe(1)
+  })
+
+  it('should return 0 for numbers with base 0', () => {
+    expect(pow(0, 23)).toBe(0)
+  })
+
+  it('should return the base to the exponent power', () => {
+    expect(pow(24, 4)).toBe(331776)
+  })
+})
