feat: Add Number of 1 bits Solution #232

문제 링크: https://leetcode.com/problems/number-of-1-bits/description/

Author: river20s

number-of-1-bits/river20s.py

@@ -0,0 +1,13 @@
+class Solution(object):
+    def hammingWeight(self, n):
+        """
+        :type n: int
+        :rtype: int
+        Time complexity: O(1)
+        Space complexity: O(1)
+        """
+        count = 0
+        for _ in range(32):
+            count += n & 1
+            n >>= 1
+        return count