'a' is a vector that starts at the origin and ends at (x, y). Find |a|.
Hint: It is as simple as "ABC".
More test cases, please! ;-)
Project Euler: Problem 1, Multiples of 3 and 5
Is A the inverse of B?
Generate a vector like 1,2,2,3,3,3,4,4,4,4
Find the position of first minimum value in an integer array with numbers
Reverse a matrix
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