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How to Solve Maximum Points You Can Obtain from Cards Problem

Master the Maximum Points You Can Obtain from Cards LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.

Phantom Code generates complete solutions and debugging hints that you can use while explaining your approach, so you stay calm and in control.

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Medium#1423

LeetCode Problem

Maximum Points You Can Obtain from Cards

There are several cards arranged in a row, and each card has an associated number of points. The points are given in the integer array cardPoints. In one step, you can take one card from the beginning or from the end of the row. You have to take exactly k cards. Your score is the sum of the points of the cards you have taken. Given the integer array cardPoints and the integer k, return the maximum score you can obtain.

ArraySliding WindowPrefix Sum

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Problem Breakdown

Understanding the Maximum Points You Can Obtain from Cards Problem

Let's break down this LeetCode problem and understand what makes it challenging in interview settings.

Problem Statement

MediumProblem #1423

LeetCode

Maximum Points You Can Obtain from Cards

How Phantom Code Helps

Get real-time assistance for Maximum Points You Can Obtain from Cards problems during coding interviews. Phantom Code provides instant solutions and explanations.

Examples

# Example 1

Input

cardPoints = [1,2,3,4,5,6,1], k = 3

Output

# Example 2

Input

cardPoints = [2,2,2], k = 2

Output

# Example 3

Input

cardPoints = [9,7,7,9,7,7,9], k = 7

Output

Constraints

1 <= cardPoints.length <= 105

1 <= cardPoints[i] <= 104

1 <= k <= cardPoints.length

How Phantom Code Helps with LeetCode Problems

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Solve Maximum Points You Can Obtain from Cards — There are several cards arranged in a row, and each card has an associated numbe...

Here's the optimal approach using Array:

def solve(input):

# Optimal O(n) solution

return result

Time: O(n) | Space: O(n)

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Undetectability Checklist

Run compatibility test before interviews

Use recommended Zoom version settings

Enable advanced screen capture options

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Platform Compatibility

Zoom

Supported

Google Meet

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HackerRank

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CodeSignal

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CoderPad

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Teams

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Undetectability and technical details

Our native desktop architecture avoids common detection vectors used by browser extensions. We provide a clear checklist so you can run basic checks and confirm the app will be invisible.

Platform compatibility and limitations

We work with Zoom, HackerRank, CodeSignal, CoderPad and other web-based platforms. Check the compatibility note and request a browser link if a specific desktop app is unsupported.

Frequently Asked Questions

Common questions about solving Maximum Points You Can Obtain from Cards and using Phantom Code during coding interviews.

How does Phantom Code help me solve coding problems like Maximum Points You Can Obtain from Cards 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 Maximum Points You Can Obtain from Cards?

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 Maximum Points You Can Obtain from Cards?

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 Maximum Points You Can Obtain from Cards 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 Maximum Points You Can Obtain from Cards 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 Maximum Points You Can Obtain from Cards 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 Maximum Points You Can Obtain from Cards 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 Maximum Points You Can Obtain from Cards 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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