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Short Regex solution in Creative category for Find Sequence by StefanPochmann
import re
def checkio(m):
m = ''.join(''.join(map(str, r)).ljust(20) for r in m)
return any(re.search('(\d)' + r'.{%d}\1'%d * 3, m) for d in (0,18,19,20))
April 23, 2015
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