Feliphe Marinho MarinhoFeliphe
adrianoluis
/ DocumentUtil.java
Last active
May 4, 2024 16:12
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
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| 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; |