Create

Author: kamyu104

Python/count-the-number-of-vowel-strings-in-range.py

@@ -0,0 +1,14 @@
+# Time:  O(n)
+# Space: O(1)
+
+# string
+class Solution(object):
+    def vowelStrings(self, words, left, right):
+        """
+        :type words: List[str]
+        :type left: int
+        :type right: int
+        :rtype: int
+        """
+        VOWELS = {'a', 'e', 'i', 'o', 'u'}
+        return sum(words[i][0] in VOWELS and words[i][-1] in VOWELS for i in xrange(left, right+1))