27 lines
513 B
Python
27 lines
513 B
Python
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#!/usr/bin/python
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import re
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RE_MATCH_LONGEST = re.compile(r'(.)(\1*)')
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def lookAndSay(sequence):
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pos = 0
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result = ""
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while pos < len(sequence):
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match = re.match(RE_MATCH_LONGEST, sequence[pos:])
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pos += len(match.group(2)) + 1
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result = "%s%d%s" % (result, len(match.group(2))+1, match.group(1))
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return result
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def main():
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input = "1113222113"
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for x in range(0, 50):
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input = lookAndSay(input)
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print len(input)
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if __name__ == "__main__":
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main()
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