Class Solution
Easy
A sentence is a list of words that are separated by a single space with no leading or trailing spaces.
- For example,
"Hello World"
,"HELLO"
,"hello world hello world"
are all sentences.
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 character of the last word is equal to the first character of the first word.
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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Constructor Summary
Constructors -
Method Summary
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Constructor Details
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Solution
public Solution()
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Method Details
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isCircularSentence
public boolean isCircularSentence(java.lang.String sentence)
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