it's a bit unclear why padding is necessary in the first two test cases, where the number of characters (15) is already a multiple of the key size (3 or 5, respectively)
I agree with Alfonso.
@Mehmet can you explain why?
Sort a list of complex numbers based on far they are from the origin.
Project Euler: Problem 3, Largest prime factor
Similar Triangles - find the height of the tree
Is the input divisible by 3?
Bridge and Torch Problem - Minimum time
Fill the matrix - 1
List all of the integer points in a bounded feasble region
Write c^3 as sum of two squares a^2+b^2
Good Morning :)
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