code: def guess_interval(nums, accuracy=0):
      if not nums:
          return 0
      nums = sorted([int(i) for i in nums])
      if len(nums) == 1:
          return nums[0]
      diffs = [nums[i + 1] - nums[i] for i in range(len(nums) - 1)]
      diffs = [item for item in diffs if item >= accuracy]
      sorted_diff = sorted(diffs)
      result = sorted_diff[len(diffs) // 2]
      return result