bad algorithm. for loop inside the for loop. index method is O(n)

I got a companion.

did you animated the dragons and bullets ? just kidding.

Nice solution. But you can return false first.

I don't know how it is clever and best practices. Friend, filter means one loop. here 4 filter. we can do it easily by one loop.

yeah. got my company.

i feel ashamed after i saw this solution.

logic is same as mine but i did indirect way. Anyway happy.

happy to see similiar code of mine.

i wonder how this will be best solution and clever. time complexity for slicing O(k).

similiar to my solution. we can append signature list itself and return.