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How to Solve The Number of Full Rounds You Have Played Problem
Master the The Number of Full Rounds You Have Played LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#1904
LeetCode ProblemThe Number of Full Rounds You Have Played
You are participating in an online chess tournament. There is a chess round that starts every 15 minutes. The first round of the day starts at 00:00, and after every 15 minutes, a new round starts. You are given two strings loginTime and logoutTime where: If logoutTime is earlier than loginTime, this means you have played from loginTime to midnight and from midnight to logoutTime. Return the number of full chess rounds you have played in the tournament. Note: All the given times follow the 24-hour clock. That means the first round of the day starts at 00:00 and the last round of the day starts at 23:45.
MathString
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Problem Breakdown
Understanding the The Number of Full Rounds You Have Played Problem
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Problem Statement
You are participating in an online chess tournament. There is a chess round that starts every 15 minutes. The first round of the day starts at 00:00, and after every 15 minutes, a new round starts. You are given two strings loginTime and logoutTime where: If logoutTime is earlier than loginTime, this means you have played from loginTime to midnight and from midnight to logoutTime. Return the number of full chess rounds you have played in the tournament. Note: All the given times follow the 24-hour clock. That means the first round of the day starts at 00:00 and the last round of the day starts at 23:45.
MediumProblem #1904
LeetCodeThe Number of Full Rounds You Have Played
Related Topics
MathString
How Phantom Code Helps
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Examples
# Example 1
Input
loginTime = "09:31", logoutTime = "10:14"
Output
1
# Example 2
Input
loginTime = "21:30", logoutTime = "03:00"
Output
22
Constraints
loginTime and logoutTime are in the format hh:mm.
00 <= hh <= 23
00 <= mm <= 59
loginTime and logoutTime are not equal.
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Solve The Number of Full Rounds You Have Played — You are participating in an online chess tournament. There is a chess round that...
Here's the optimal approach using Math:
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 The Number of Full Rounds You Have Played and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like The Number of Full Rounds You Have Played 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 The Number of Full Rounds You Have Played?
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 The Number of Full Rounds You Have Played?
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 The Number of Full Rounds You Have Played 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 The Number of Full Rounds You Have Played 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 The Number of Full Rounds You Have Played 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 The Number of Full Rounds You Have Played 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 The Number of Full Rounds You Have Played 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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