20241221 finished.

src/problem/mod.rs

@@ -382,3 +382,5 @@ mod p3292_minimum_number_of_valid_strings_to_form_target_ii;
 mod p3285_find_indices_of_stable_mountains;
 
 mod p3138_minimum_length_of_anagram_concatenation;
+
+mod p2545_sort_the_students_by_their_kth_score;

src/problem/p2545_sort_the_students_by_their_kth_score.rs

@@ -0,0 +1,40 @@
+/**
+ * [2545] Sort the Students by Their Kth Score
+ */
+pub struct Solution {}
+
+// submission codes start here
+
+impl Solution {
+    pub fn sort_the_students(score: Vec<Vec<i32>>, k: i32) -> Vec<Vec<i32>> {
+        let k = k as usize;
+
+        let mut target_scores: Vec<(i32, usize)> =
+            score.iter().enumerate().map(|(i, v)| (v[k], i)).collect();
+
+        target_scores.sort_unstable_by(|a, b| b.0.cmp(&a.0));
+
+        target_scores
+            .into_iter()
+            .map(|x| score[x.1].clone())
+            .collect()
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_2545() {
+        assert_eq!(
+            vec![vec![7, 5, 11, 2], vec![10, 6, 9, 1], vec![4, 8, 3, 15]],
+            Solution::sort_the_students(
+                vec![vec![10, 6, 9, 1], vec![7, 5, 11, 2], vec![4, 8, 3, 15]],
+                2
+            )
+        );
+    }
+}