Rep-string: Difference between revisions

</pre>

=={{header|Crystal}}

{{trans|Go}}

<lang ruby>def rep(s : String) : Int32

x = s.size // 2

while x > 0

return x if s.starts_with? s[x..]

x -= 1

end

0

end

def main

%w(

1001110011

1110111011

0010010010

1010101010

1111111111

0100101101

0100100

101

11

00

1

).each do |s|

n = rep s

puts n > 0 ? "\"#{s}\" #{n} rep-string \"#{s[..(n - 1)]}\"" : "\"#{s}\" not a rep-string"

end

end

main

</lang>

{{out}}

<pre>

"1001110011" 5 rep-string "10011"

"1110111011" 4 rep-string "1110"

"0010010010" 3 rep-string "001"

"1010101010" 4 rep-string "1010"

"1111111111" 5 rep-string "11111"

"0100101101" not a rep-string

"0100100" 3 rep-string "010"

"101" not a rep-string

"11" 1 rep-string "1"

"00" 1 rep-string "0"

"1" not a rep-string