Problem 865. Add more zeros

Created by Jean-Marie Sainthillier

Solve Later

Find code that adds one 0 to each sequence of 0 in a string (composed with only 0 or 1).

For example:

 '1010' -> '100100'
 '0110' -> '001100'
 '1000' -> '10000'
 '1111' -> '1111'

Solve

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1048 Solutions
337 Solvers

Last Solution submitted on Dec 14, 2025

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Pablo Lobo on 4 Jan 2017

Didn't really understand the problem right from reading the task itself, but from reading the test cases. Really fun problem though. First time I used regexprep function, so I learned a lot!

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