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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
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because he used 'i' and the first used 'x'
Why isn't this grouped with the first solution?
This comment is hidden because it contains spoiler information about the solution
used Sieve of Eratosthenes but got TLE then after many optimizations also got TLE finally saw your solution great job!!!, learned a lot from your code learned something new happy :Xd
AC in one go cake walk!!
What? This is not even google-translatable.
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Duplicate:
https://www.codewars.com/kata/find-the-unique-number
Nice! it reminds me of https://www.codewars.com/kata/find-the-odd-int & https://www.codewars.com/kata/find-the-stray-number :)
Add some random tests!