Lotto

using System;

namespace Lotto {

  internal class Program {

    private static void Main(string[] args) {
      int[] lotto = new int[6];
      const int MIN = 1;
      const int MAX = 50;

      Random random = new Random();

      for (int i = 0; i < lotto.Length; i++) {
        int rand = random.Next(MIN, MAX);
        for (int j = i - 1; j >= 0; j--) {
          if (lotto[j] == rand) {
            rand = random.Next(MIN, MAX);
            j = i - 1;
          }
        }
        lotto[i] = rand;
      }
    }
  }
}