Project Euler Java Solutions - Specifications

Technology Stack

Unnamed Classes & Instance Main Methods (JEP 445/463): Code should be written as simple scripts without outer class declarations. Use void main().
Functional Programming First: Prefer java.util.stream (e.g., IntStream, Stream) over imperative loops (for, while) to maximize expressiveness and readability.
Data Structures: Use record for immutable tuples/data carriers.
IO Output: Sempre utilizar IO.println e IO.print no lugar das versões legadas de System.out.*.
Static Imports: Para a API de java.util.stream e java.util.Arrays (ex: IntStream.range, Arrays.stream), SEMPRE utilizar static imports no topo do arquivo para simplificar a sintaxe ao máximo.
Optimization Philosophy:
- Expressiveness comes first.
- Algorithmic performance (e.g., Sieve of Eratosthenes, mathematically reduced formulas) comes second.
- Avoid sacrificing pure Streams for imperative arrays just to save milliseconds, unless strictly necessary for a significant bottleneck.