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Use this tag when the code is a solution to a programming challenge. Always include a sufficient description of the problem to be solved - while a link to the challenge is welcome, the review request needs to be complete when the challenge site is unavailable.
12
votes
Count duplicates
I would do something along these lines.
I'm not that sharp on C# but anyway...
The main idea here is to use an int array instead of a Dictionary. This uses the fact that all values are between 0 and …