Artemis: Refactor String and Vector Operations for Performance and Readability

[artemis-gen-ai]

This pull request refactors methods in the Strops and DsVector classes to improve performance and readability. Key changes include:

1. Strops Class:

   • Refactored reverse method to use StringBuilder for efficient string reversal.
   • Updated isPalindrome method to use a two-pointer approach and replaced str.length() == 0 with str.isEmpty() for better readability.

2. DsVector Class:

   • Replaced manual sorting in sortVector with Collections.sort() for improved performance.
   • Simplified reverseVector using Collections.reverse().
   • Enhanced rotateVector by calculating effective rotation and using subList() for efficiency.
   • Streamlined mergeVectors with addAll() to combine vectors, reducing code complexity.

These changes lead to better performance in string and vector operations, while also making the code easier to understand and maintain.

Metric	Improvement	Value
runtime	🟢 6.01%	0.63 s
cpu	🔴 -0.84%	173.15 %
memory	🟢 2.72%	48.43 MB