04 April 2019 2 9K Report

Is any polynomial (reasonably efficient) reduction which makes possible solving the LCS problem for inputs over any arbitrary alphabet through solving LCS for bit-strings?

Even though the general DP algorithm for LCS does not care about the underlying alphabet, there are some properties which are easy to prove for the binary case, and a reduction as asked above can help generalizing those properties to any arbitrary alphabet.

https://cs.stackexchange.com/q/59378/53288?stw=2

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