Artemis: Refactor Code for Improved Readability and Performance

[artemis-gen-ai]

This pull request includes several refactorings aimed at enhancing code readability, maintainability, and performance across multiple classes. Key changes include:

1. Output Formatting in App Class: Refactored output statements to use System.out.printf(...) for cleaner formatting, introduced temporary variables for vector string representations, and simplified vector initialization using the diamond operator.

2. Optimized Sorting Algorithm: Improved the sortVector method by adjusting loop conditions to minimize unnecessary comparisons, enhancing the efficiency of the bubble sort algorithm.

3. Refactored MaxN Method: Replaced the sorting approach with a PriorityQueue to efficiently retrieve the largest n elements, reducing time complexity from O(m log m) to O(m log n).

4. Updated Formatting in SingleTest Class: Adjusted the formatting of the closing brace in the SingleTest class for better readability, adhering to Java conventions.

These changes collectively improve the codebase without altering existing functionality.

Metric	Improvement	Value
runtime	🟢 8.78%	0.74 s
cpu	🔴 -1.93%	142.96 %
memory	🟢 13.42%	62.79 MB