Update 191-number-of-1-bits.js

Author: everthis

191-number-of-1-bits.js

@@ -1,3 +1,18 @@
+/**
+ * @param {number} n - a positive integer
+ * @return {number}
+ */
+const hammingWeight = function(n) {
+  let res = 0
+  while(n > 0) {
+    if(n & 1) res++
+    n = n >>> 1
+  }
+  return res
+};
+
+// another
+
 /**
  * @param {number} n - a positive integer
  * @return {number}