solve(w03): 191. Number of 1 Bits

Author: jeongwoo903

number-of-1-bits/jeongwoo903.js

@@ -0,0 +1,14 @@
+/*
+* 시간 복잡도: O(log n)
+* 공간 복잡도; O(log n)
+*/
+
+/**
+ * @param {number} n
+ * @return {number}
+ */
+var hammingWeight = function(n) {
+  const dec = n.toString(2);
+  const parsedBits = [...dec].filter(item => item === '1');
+  return parsedBits.length;
+};