使用python或excel查找每组连续值的长度
我有一个python list / excel范围，看起来像
[0,0,0,0,1,1,0,0,1,1,1,1,1,0,1,0,0,0,0,0,0,0,1,1,0,0,0] . 我想要以下输出：
length of 1st set of zeros - 4 length of 2nd set of zeros - 2 length of 3rd set of zeros - 1 length of 4th set of zeros - 7 length of 5th set of zeros - 3
我已经在Excel中尝试了" COUNTIF($D2:D$2,D2)"这个公式" COUNTIF($D2:D$2,D2)"它帮助我find第n个值，但是我不确定如何find每个连续值的长度。
如何在Excel和Python中实现上述function？
你应该使用itertools.groupby ：
counter = 1 suffixes = {1: 'st', 2:'nd', 3:'rd'} for key, group in itertools.groupby(the_sequence): if key == 0: print 'The length of {}{} sequence of zeros is: {}'.format(counter, suffixes.get(counter, 'th'), len(tuple(group))) counter += 1
输出：
The length of 1st sequence of zeros is: 4 The length of 2nd sequence of zeros is: 2 The length of 3rd sequence of zeros is: 1 The length of 4th sequence of zeros is: 7 The length of 5th sequence of zeros is: 3
不幸的是，我不是一个excel用户，我不能帮助你的Excel解决scheme。
在Excel中，假设在D2:D20有数据，则可以在F2中使用此“数组公式”
=IFERROR(INDEX(FREQUENCY(IF($D$2:$D$20=0,ROW($D$2:$D$20)),IF(OFFSET($D$2:$D$20,1,0)<>0,IF($D$2:$D$20=0,ROW($D$2:$D$20)))),ROWS(F$2:F2)),"")
用CTRL + SHIFT + ENTER确认并复制下来 – 这将给你一个所有零序列长度的列表 – 当数字用完时，你会得到空白
如果数据是连续的，而不是列，则需要稍微修改一下…..