Skip to content

Instantly share code, notes, and snippets.

View viniciosarodrigues's full-sized avatar
🏠
Working from home

Vinícios A. Rodrigues viniciosarodrigues

🏠
Working from home
43 followers · 59 following
View GitHub Profile
@Kamilahsantos
Kamilahsantos / soft-skills.md
Created May 4, 2022 00:39
@adrianoluis
adrianoluis / DocumentUtil.java
Last active November 3, 2025 19:33
Utility class to validate CPF and CNPJ document types. For CPF use isValidSsn and for CNPJ use isValidTfn. Added to repo https://github.com/adrianoluis/misc-tools
public class DocumentUtil {
// CPF
private static final int[] WEIGHT_SSN = {11, 10, 9, 8, 7, 6, 5, 4, 3, 2};
// CNPJ
private static final int[] WEIGHT_TFN = {6, 5, 4, 3, 2, 9, 8, 7, 6, 5, 4, 3, 2};
private static int sum(int[] weight, char[] numbers, int length) {
if (length <= 0) return 0;