chore: Merge pull request TheAlgorithms#764 from lvlte/fixes

PR#759 - Fix test/build script and comply with JS standard styles.

Author: raklaptudirm

Bit-Manipulation/IsPowerOfTwo.js

@@ -14,7 +14,7 @@
  And we know that 1's complement is just opp. of that number.
  So, (n & (n-1)) will be 0.
 
- For eg: (1000 & (1000-1)) 
+ For eg: (1000 & (1000-1))
  1 0 0 0 // Original Number (8)
  0 1 1 1 // After Subtracting 1 (8-1 = 7)
  _______
@@ -23,6 +23,8 @@
 */
 
 export const IsPowerOfTwo = (n) => {
- if (n != 0 && (n & (n - 1)) == 0) return true
- else return false
+ if (n > 0 && (n & (n - 1)) === 0) {
+ return true
+ }
+ return false
 }

Bit-Manipulation/test/IsPowerOfTwo.test.js

@@ -5,9 +5,9 @@ test('Check if 0 is a power of 2 or not:', () => {
  expect(res).toBe(false)
 })
 
-test('Check if 0 is a power of 2 or not:', () => {
+test('Check if 1 is a power of 2 or not:', () => {
  const res = IsPowerOfTwo(1)
- expect(res).toBe(false)
+ expect(res).toBe(true)
 })
 
 test('Check if 4 is a power of 2 or not:', () => {