Create percentage-of-letter-in-string.py

Author: kamyu104

Python/percentage-of-letter-in-string.py

@@ -0,0 +1,12 @@
+# Time:  O(n)
+# Space: O(1)
+
+# string
+class Solution(object):
+    def percentageLetter(self, s, letter):
+        """
+        :type s: str
+        :type letter: str
+        :rtype: int
+        """
+        return 100*s.count(letter)//len(s)