Week 3: number-1-bits

Author: mandel-17

number-of-1-bits/mandel-17.py

@@ -0,0 +1,10 @@
+import collections
+
+class Solution:
+    def hammingWeight(self, n: int) -> int:
+        two_digit = []
+        while n >= 1:
+            two_digit.append(n % 2)
+            n = n // 2
+        cnt_dict = collections.Counter(two_digit)
+        return cnt_dict[1]