sort-the-students-by-their-kth-score_2545.py

# 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.


# 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]]
# Explanation: In the above diagram, S denotes the student, while E denotes the exam.
# - The student with index 1 scored 11 in exam 2, which is the highest score, so they got first place.
# - The student with index 0 scored 9 in exam 2, which is the second highest score, so they got second place.
# - The student with index 2 scored 3 in exam 2, which is the lowest score, so they got third place.
# Example 2:


# Input: score = [[3,4],[5,6]], k = 0
# Output: [[5,6],[3,4]]
# Explanation: In the above diagram, S denotes the student, while E denotes the exam.
# - The student with index 1 scored 5 in exam 0, which is the highest score, so they got first place.
# - The student with index 0 scored 3 in exam 0, which is the lowest score, so they got second place.


# 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


# ---------------------------------------Runtime 323 ms Beats 68.78% Memory 22.30 MB Beats 99.67%---------------------------------------


from typing import List


class Solution:
    def sortTheStudents(
        self, score: List[List[int]], k: int
    ) -> List[List[int]]:
        return sorted(score, key=lambda x: x[k] * -1)