Recursion solution can be faster than iterative solution - http://www.ahmadsoft.org/articles/recursion/index.html

Java 21: Performance Improvements Revealed - https://minborgsjavapot.blogspot.com/2023/01/java-21-performance-improvements.html https://minborgsjavapot.blogspot.com/2023/02/jdk-21-image-performance-improvements.html