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How to Solve Circular Sentence Problem
Master the Circular Sentence LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsEasy#2490
LeetCode ProblemCircular 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: 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.
String
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Problem Breakdown
Understanding the Circular Sentence Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
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.
EasyProblem #2490
LeetCodeCircular Sentence
Related Topics
String
How Phantom Code Helps
Get real-time assistance for Circular Sentence problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
sentence = "leetcode exercises sound delightful"
Output
true
# Example 2
Input
sentence = "eetcode"
Output
true
# Example 3
Input
sentence = "Leetcode is cool"
Output
false
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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Solve Circular Sentence — A sentence is a list of words that are separated by a single space with no leadi...
Here's the optimal approach using String:
def solve(input):
# Optimal O(n) solution
return result
Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving Circular Sentence and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Circular Sentence during interviews?
Phantom Code generates complete solutions instantly with proper complexity analysis, letting you focus on explaining your approach and demonstrating problem-solving skills rather than getting stuck on implementation details during high-pressure situations.
What if the interviewer asks follow-up questions or modifications to problems like Circular Sentence?
Phantom Code adapts in real-time. Screenshot the modified problem or use audio mode to capture the interviewer's follow-up, and get an updated solution within seconds — including edge cases and optimizations.
Can Phantom Code help me communicate my solution for problems like Circular Sentence?
Yes. Phantom Code provides step-by-step approach explanations with 3 progressive thoughts, so you can walk through your solution naturally. It also provides time and space complexity analysis to discuss trade-offs.
How does Phantom Code assist with different programming languages for Circular Sentence type problems?
Phantom Code supports 11 programming languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set your preferred language and get idiomatic solutions.
What coding mistakes does Phantom Code help me avoid during Circular Sentence interviews?
Phantom Code catches common mistakes like off-by-one errors, missing edge cases, incorrect base conditions, and suboptimal approaches. It provides clean, well-structured code that handles all edge cases.
Is Phantom Code detectable when solving problems like Circular Sentence during live interviews?
No. Phantom Code runs as an invisible desktop overlay that doesn't appear in screen shares, recordings, or proctoring software. It works with Zoom, HackerRank, CodeSignal, CoderPad, and all major platforms.
How does Phantom Code help when I'm struggling with Circular Sentence style questions under pressure?
The AI provides structured guidance: first the approach (what algorithm/data structure to use and why), then the implementation with clean code, and finally complexity analysis. This helps you think clearly even under pressure.
Does Phantom Code work for the coding platforms used in Circular Sentence interviews?
Yes. Phantom Code works with all major coding platforms including LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, and any browser-based coding environment.
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