❔ Verify Uniqueness in an Array

public static bool Test4(string [] names)
        {
                  bool unique = false;
                  for (int i = 0; i < names.Length; i++)
                  {
                        for(int j = 1; j < i; j++)
                        {
                              if (names[i] != names[j] && names[j] != names[i])
                              {
                                    unique = true;

                              }
                              else if (names[i] == names[j] && names[j] == names[i])
                              {
                                    unique = false;
                              }
                        }
                  }
                  return unique;
        }