Create 191-Number-of-1-Bits.py

Author: neetcode-gh

191-Number-of-1-Bits.py

@@ -0,0 +1,7 @@
+class Solution:
+    def hammingWeight(self, n: int) -> int:
+        res = 0
+        while n:
+            n &= (n - 1)
+            res += 1
+        return res