Create minimum-changes-to-make-alternating-binary-string.py

Author: kamyu104

Python/minimum-changes-to-make-alternating-binary-string.py

@@ -0,0 +1,11 @@
+# Time:  O(n)
+# Space: O(1)
+
+class Solution(object):
+    def minOperations(self, s):
+        """
+        :type s: str
+        :rtype: int
+        """
+        cnt = sum(int(c) == i%2 for i, c in enumerate(s))
+        return min(cnt, len(s)-cnt)