Circular Sentence
A sentence is a list of words that are separated by a single space with no leading or trailing spaces.
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:
For example, "leetcode exercises sound delightful", "eetcode", "leetcode eats soul" are all circular sentences. However, "Leetcode is cool", "happy Leetcode", "Leetcode" and "I like Leetcode" are not circular sentences.
Given a string sentence, return true if it is circular. Otherwise, return false.
Example 1
Input: sentence = "leetcode exercises sound delightful"
Output: true
Explanation: The words in sentence are ["leetcode", "exercises", "sound", "delightful"]. - leetcode's last character is equal to exercises's first character. - exercises's last character is equal to sound's first character. - sound's last character is equal to delightful's first character. - delightful's last character is equal to leetcode's first character. The sentence is circular.
Example 2
Input: sentence = "eetcode"
Output: true
Explanation: The words in sentence are ["eetcode"]. - eetcode's last character is equal to eetcode's first character. The sentence is circular.
Example 3
Input: sentence = "Leetcode is cool"
Output: false
Explanation: The words in sentence are ["Leetcode", "is", "cool"]. - Leetcode's last character is not equal to is's first character. The sentence is not circular.
Constraints
- 1 <= sentence.length <= 500
- sentence consist of only lowercase and uppercase English letters and spaces.
- The words in sentence are separated by a single space.
- There are no leading or trailing spaces.
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