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January 5, 2017 08:30
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| def parts(str, current, elements): | |
| if len(str) < 1: | |
| return elements + [current] | |
| if current == '' or current.startswith(str[0]): | |
| return parts(str[1:], current + str[0], elements) | |
| return parts(str[1:], str[0], elements + [current]) | |
| ''.join(list(map(lambda x: x[0] + str(len(x)), parts('aaabbcccddd', '', [])))) |
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