number-of-1-bits py3

0191_number-of-1-bits/python3/solution.py

@@ -0,0 +1,9 @@
+class Solution:
+    def hammingWeight(self, n: int) -> int:
+        count = 0
+        
+        while n:
+            count += 1 if n & 1 == 1 else 0
+            n >>= 1
+        
+        return count