Alternate solutions to problems

[joshuazmiller]

I'm starting to write some alternate solutions to these problems. Some of the proposed solutions appear more concise and possibly perform better. Please consider including them. Thanks.

[diadical]

@joshuazmiller thank you for the contribution.

Please run the linting and test tools as described in the README. There are a few linting issues the most significant of which is that you don't export your added functions and as such they are not tested by the existing tests.

I also disagree with the stated time complexity of the two solutions you've provided. The asymptotic running time for q1 is O(N^2) and q2 is O(N*M) due to your usage of both string.indexOf and string.splice. As such both algorithms are going to be much slower than the other solutions on very large inputs.