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  1. using static System.Console;
  2. using System;
  3. using System.Linq;
  4.  
  5. public class Test {
  6. 	public static void Main() {
  7. 		WriteLine(GerarCpf(Uf.SP));
  8. 		WriteLine(GerarCpf());
  9. 	}
  10. 	public static string GerarCpf(Uf uf = Uf.NA) {
  11. 		var random = new Random();
  12. 		int[] digitos = new int[11];
  13. 		int soma = 0, soma2 = 0;
  14. 		do {
  15. 			for (var i = 0; i < 8; i++) {
  16. 				digitos[i] = random.Next(10);
  17. 				soma += digitos[i] * (10 - i);
  18. 				soma2 += digitos[i] * (11 - i);
  19. 			}
  20. 			digitos[8] = uf == Uf.NA ? random.Next(10) : (int)uf;
  21. 			soma += digitos[8] * 2;
  22. 			soma2 += digitos[8] * 3;
  23. 		} while (Repetidos(digitos));
  24. 		var resto = soma % 11;
  25. 		digitos[9] = resto < 2 ? 0 : 11 - resto;
  26. 		soma2 += digitos[9] * 2;
  27. 		resto = soma2 % 11;
  28. 		digitos[10] = resto < 2 ? 0 : 11 - resto;
  29. 		return string.Join("", digitos.Select(p => p.ToString()).ToArray());
  30. 	}
  31.  
  32. 	private static bool Repetidos(int[] digitos) {
  33. 		var val = digitos[0];
  34. 		return digitos.Take(9).All(x => x == val); 
  35. 	}
  36. }
  37.  
  38. public enum Uf {
  39. 	AC = 2,	AL = 4,	AP = 2,	AM = 2,	BA = 5,	CE = 3,	DF = 1,	ES = 7,	GO = 1,	MA = 3,	MT = 1,	MS = 1,	MG = 6,	PA = 2,	PB = 4,	PR = 9,	PE = 4,	PI = 3,	RJ = 7,	RN = 4,	RS = 0,	RO = 2,	RR = 2,	SC = 9,	SP = 8,	SE = 5,	TO = 1,	NA = -1
  40. }
  41.  
  42. //https://pt.stackoverflow.com/q/33669/101
Success #stdin #stdout 0.03s 23796KB
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stdin 
Standard input is empty
stdout 
59501626849
84965166795
https://ideone.com/X9EV2K
language:
C# (gmcs 5.20.1)
created:
3 years ago
visibility:
public

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