used proper JSDoc comment and fixed test issues

madhuredra · madhuredra · commit 82b11c7c4de5 · 2023-09-21T15:16:04.000+05:30
diff --git a/Bit-Manipulation/IsPowerofFour.js b/Bit-Manipulation/IsPowerofFour.js
@@ -1,20 +1,17 @@
-/*
-    author: @dev-madhurendra
+/**
+ * @author : dev-madhurendra
+ * Checks whether the given number is a power of four or not.
+ *
+ * A number is considered a power of four if and only if there is a single '1' bit in its binary representation,
+ * and that '1' bit is at the first position, followed by an even number of '0' bits.
+ *
+ * @param {number} n - The input number to check.
+ * @returns {boolean} True if the number is a power of four, false otherwise.
+ *
+ * @example
+ * const result = isPowerOfFour(16); // Returns true (16 is 4^2)
+ * const result2 = isPowerOfFour(5);  // Returns false (5 is not a power of four)
+ */
+const isPowerOfFour = (n) => ((n > 0) && ((n & n - 1) === 0) && (n % 3 === 1))
 
-    This script will check whether the given
-    number is a power of four or not.
-
-    A number will be power of four if and only if there is a 1 in the binary
-    of the digit and it will be at the first position and followed by even number of zeroes are there.
-
-    n   n-1%3==0   (n-1)'sbin  (n)'sbin
-    1   0           0           1        - 4^0
-    4   3           011         100      - 4^1
-    16  15          01111       10000    - 4^2
-    64  63          011111      1000000  - 4^3
-
-*/
-
-const IsPowerOfFour = (n) => ((n > 0) && ((n & n - 1) === 0) && (n % 3 === 1))
-
-export { IsPowerOfFour }
+export { isPowerOfFour }
