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+# 2490. Circular Sentence
+
+"""
+a sentence is a list of words that are separated by a single space with no
+leading or trailing spaces. words consist of only uppercase and lowercase
+english letters. uppercase and lowercase english letters are considered
+different. a sentence is circular if the last character of a word is equal to
+the first character of the next word, the last chracter of the last word is
+equal to the first character of the first word. given a string 'sentence',
+return 'true' if it is a circular sentence, and 'false' otherwise.
+"""
+
+
+class Solution(object):
+ def isCircularSentence(self, sentence):
+ """
+ :type sentence: str
+ :rtype: bool
+ """
+ n = len(sentence)
+ if sentence[0] != sentence[n - 1]:
+ return False
+ for i in range(1, n - 1):
+ if sentence[i] == " ":
+ if sentence[i - 1] != sentence[i + 1]:
+ return False
+ return True
+
+
+if __name__ == "__main__":
+ obj = Solution()
+ print(obj.isCircularSentence(sentence="leetcode exercises sound delightful"))
+ print(obj.isCircularSentence(sentence="eetcode"))
+ print(obj.isCircularSentence(sentence="Leetcode is cool"))