Module of Power of Two Using Bitmask

Bit-Manipulation/ModuleOfPowerOfTwo.js

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+/**
+ * @author: gianvallejos92
+ * This script will find the module of S % N using bitmask
+ * N is power of 2. E.g: 1, 2, 4, 8, 16, 32...
+ * Reference: https://www.geeksforgeeks.org/compute-modulus-division-by-a-power-of-2-number/
+ */
+
+export const ModuleOfPowerOfTwo = (s, n) => {
+  return (s & (n - 1))
+}

Bit-Manipulation/test/ModuleOfPowerOfTwo.test.js

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+import { ModuleOfPowerOfTwo } from '../ModuleOfPowerOfTwo'
+
+test('Check 7 module 4', () => {
+  const res = ModuleOfPowerOfTwo(7, 4)
+  expect(res).toBe(3)
+})
+
+test('Check 150 module 4', () => {
+  const res = ModuleOfPowerOfTwo(150, 4)
+  expect(res).toBe(2)
+})
+
+test('Check 155 module 2', () => {
+  const res = ModuleOfPowerOfTwo(155, 2)
+  expect(res).toBe(1)
+})
+
+test('Check 150 module 16', () => {
+  const res = ModuleOfPowerOfTwo(150, 16)
+  expect(res).toBe(6)
+})
+
+test('Check 6 module 4', () => {
+  const res = ModuleOfPowerOfTwo(6, 4)
+  expect(res).toBe(2)
+})
+
+test('Check 12 module 8', () => {
+  const res = ModuleOfPowerOfTwo(12, 8)
+  expect(res).toBe(4)
+})
+
+test('Check 10 module 2', () => {
+  const res = ModuleOfPowerOfTwo(10, 2)
+  expect(res).toBe(0)
+})