Rep-string: Difference between revisions

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Given a series of ones and zeroes in a string, define a repeated string or ''rep-string'' as a string which is created by repeating a substring of the ''first'' N characters of the string ''truncated on the right to the length of the input string, and in which the substring appears repeated at least twice in the original''.
 
For example, the string     '''10011001100'''     is a rep-string as the leftmost four characters of     '''1001'''     are repeated three times and truncated on the right to give the original string.
 
Note that the requirement for having the repeat occur two or more times means that the repeating unit is   ''never''   longer than half the length of the input string.
 
 
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