2545 - Sort the Students by Their Kth Score.

Medium

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 <code>i^th</code> student got in the <code>j^th</code> 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 <code>k^th</code> ( 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

• <code>1 <= scorej<= 10⁵</code>

• score consists of distinct integers.

• 0 <= k < n