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How to Solve Sort the Students by Their Kth Score Problem
Master the Sort the Students by Their Kth Score LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#2545
LeetCode ProblemSort the Students by Their Kth Score
There is a class with m students and n exams. You are given a 0-indexed m x n integer matrix score, where each row represents one student and score[i][j] denotes the score the ith student got in the jth exam. The matrix score contains distinct integers only. You are also given an integer k. Sort the students (i.e., the rows of the matrix) by their scores in the kth (0-indexed) exam from the highest to the lowest. Return the matrix after sorting it.
ArraySortingMatrix
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Problem Breakdown
Understanding the Sort the Students by Their Kth Score Problem
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Problem Statement
There is a class with m students and n exams. You are given a 0-indexed m x n integer matrix score, where each row represents one student and score[i][j] denotes the score the ith student got in the jth exam. The matrix score contains distinct integers only. You are also given an integer k. Sort the students (i.e., the rows of the matrix) by their scores in the kth (0-indexed) exam from the highest to the lowest. Return the matrix after sorting it.
MediumProblem #2545
LeetCodeSort the Students by Their Kth Score
Related Topics
ArraySortingMatrix
How Phantom Code Helps
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Examples
# Example 1
Input
score = [[10,6,9,1],[7,5,11,2],[4,8,3,15]], k = 2
Output
[[7,5,11,2],[10,6,9,1],[4,8,3,15]]
# Example 2
Input
score = [[3,4],[5,6]], k = 0
Output
[[5,6],[3,4]]
Constraints
m == score.length
n == score[i].length
1 <= m, n <= 250
1 <= score[i][j] <= 105
score consists of distinct integers.
0 <= k < n
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Solve Sort the Students by Their Kth Score — There is a class with m students and n exams. You are given a 0-indexed m x n in...
Here's the optimal approach using Array:
def solve(input):
# Optimal O(n) solution
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Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving Sort the Students by Their Kth Score and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Sort the Students by Their Kth Score 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 Sort the Students by Their Kth Score?
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 Sort the Students by Their Kth Score?
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 Sort the Students by Their Kth Score 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 Sort the Students by Their Kth Score 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 Sort the Students by Their Kth Score 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 Sort the Students by Their Kth Score 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 Sort the Students by Their Kth Score 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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