优化了之前的代码，使查询更快
a = [1,2,4, 11,12,14, 21,22,24, 31,32,34, 41,27,37,47,67, 1,2,4, 11,12,14, 21,22,24, 31,32,34, 41,27,37,47,67]
data = []
for i in range(1,len(a)):data.append( a[i]-a[i-1] )datalen = len(a)
i = 0def check(data, i, winlen):for j in range(winlen):if data[i+j] != data[i+j+winlen]:return ireturn check(data, i+winlen, winlen)while i<datalen:for winlen in range( 1, (datalen-i)//2 ):if data[i] == data[i+winlen]:end = check(data, i, winlen)if i != end:print(i, end, winlen)i = end + winlen - 1breaki += 1输出结果：
0 9 3
13 14 1
17 26 3
30 31 10 是起点 9是终点，3是片段长度，表示 1,2,4, 11,12,14, 21,22,24, 31,32,34 这串数字是按规律排序的