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)
Remove the small words from a list of words.
given 3 sides, find area of this triangle
Angle between two vectors
Are all the three given point in the same line?
kmph to mps
Good Morning :)
Bridge and Torch Problem - Minimum time
Pi Digit Probability
Digit concentration in Champernowne's constant
Challenging perms function!
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