观察计数器，计算总数并计算未完成的计数

Question

我正在尝试创建一段代码，用于观察计数器的输出，如：

a1 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
      1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
      1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30]

我希望代码能够统计总数，并告诉我遗漏了多少计数，例如，如果发生这种情况：

a1 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
      1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,12,13,14,15,16,17,18,19,20,21,22,23,24,  25, 26,  5, 6, 7, 8, 9, 10, 11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,1,2]

我会得到总共92个，但得到的反馈是8个缺失

我已经非常熟悉以下代码：

Blk_Tot = 0

CBN = 0
LBN = 0
x = 0
y = 0
z = 0
MissedBlocks = 0

for i in range(len(a1)):
    CBN = a1[i]
    if CBN - LBN <= 0:
        if LBN == 30:
            y = 30 - abs(CBN - LBN)
        elif LBN < 30:
            z = 30 - LBN
            y = 30 - abs(CBN - LBN) + z
            print(z)




        Blk_Tot = Blk_Tot + y
    else:
        x = CBN - LBN
        Blk_Tot = Blk_Tot + x
        if x > 1:
            MissedBlocks = MissedBlocks - 1 + x
    LBN = CBN


print(Blk_Tot)

print(MissedBlocks)

如果我删除1到30之间的任何一个，它都能很好地工作，但是如果我删除30，比如说29,30,1,2，它就会中断。我不希望它能够连续删除30个，并且仍然能够得到一个合适的总数

有人对如何实现这一目标有什么想法吗？我觉得我错过了一个显而易见的答案：D

对不起，我想我不清楚，a1是一个来自外部设备的计数器，它从1计数到30，然后再绕到1。每个计数实际上是消息的一部分，以表明消息已被接收；比如说12 4，我知道第三条信息不见了。我想做的是找出应该收到的总数，以及从计数中漏掉多少

更新以下帖子中的想法后，另一种方法可能是：

输入：

123456

清单[1,2,3,4,5,6]

1.检查第一个输入，查看它在列表的哪个部分，然后从那里开始（如果我们不是从零开始）

2.每次接收到输入时，检查是否与数组中的下一个值匹配

3.如果没有，那么需要多少步骤才能找到该值

Answer 1

如果你超过了30线，你不需要跟踪

只需与理想序列进行比较，并计算缺失的数字

不知道最后是否缺少零件

如果一个块中缺少30多个零件，则不知道

from itertools import cycle

def idealSeqGen():
  for i in cycle(range(1,31)):
    yield(i)

def receivedSeqGen():
  a1 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
        1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,
                    5, 6, 7, 8, 9, 10, 11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
        1,2]
  for i in a1:
    yield(i)

receivedSeq = receivedSeqGen()
idealSeq = idealSeqGen()

missing = 0
ideal = next(idealSeq)
try:
  while True:
    received = next(receivedSeq)
    while received != ideal:
      missing += 1
      ideal = next(idealSeq)
    ideal = next(idealSeq)
except StopIteration:
  pass

print (f'There are {missing} items missing')

---

编辑

循环部分可以简单一点

missing = 0
try:
  while True:
    ideal = next(idealSeq)
    received = next(receivedSeq)
    while received != ideal:
      missing += 1
      ideal = next(idealSeq)
except StopIteration:
  pass

print (f'There are {missing} items missing')