Havan Agrawal

The constraints in the [problem](https://github.com/donnemartin/interactive-coding-challenges/blob/master/arrays_strings/two_sum/two_sum_challenge.ipynb) clearly state that there is exactly one solution. Instead of modifying the solution, the problem should probably state: _...find the two indices `i`, `j` s.t....

**Notebooks** * [Challenge Notebook](https://github.com/donnemartin/interactive-coding-challenges/blob/master/recursion_dynamic/longest_common_subsequence/longest_common_subseq_challenge.ipynb) * [Solution Notebook](https://github.com/donnemartin/interactive-coding-challenges/blob/master/recursion_dynamic/longest_common_subsequence/longest_common_subseq_solution.ipynb) **Bug** The variables `num_rows` and `num_cols` are defined as: ``` num_rows = len(str0) + 1 num_cols = len(str1) + 1 ``` `i` and...

This sounds great, go ahead! 😁

**tl;dr** Hi @Showndarya , thank you for the PR. I appreciate your initiative, and it is an excellent attempt. Please see comments, and update your PR. **The long version** I...

@Devika-Shanbhag do you want to take this up later?

Hi, I'd like to fix this issue, please let me know how I can contribute :)

This happens because fcntl is a standard library available only on Linux distributions. You can read more about this [here](http://stackoverflow.com/questions/1422368/fcntl-substitute-on-windows)