add solution: number-of-1-bits

Author: dusunax

number-of-1-bits/dusunax.py

@@ -0,0 +1,4 @@
+class Solution:
+    def hammingWeight(self, n: int) -> int:
+        binary_string = bin(n).replace('0b', '');
+        return binary_string.count('1');