public boolean haveThree(int[] nums) {
  int count = 0;
  for (int n : nums) {
    if (n == 3) {
      count++;
    }
  }
  if (count != 3) {
    return false;
  }

  for (int i = 0; i < nums.length-1; i++) {
    int n1 = nums[i];
    int n2 = nums[i+1];
    if (n1 == 3 && n2 == 3) {
      return false;
    }
  }
  return true;
}