Given a matrix M, return a vector y such that for each k
(y(k) is the Euclidean norm of the k-th column of M)
EDIT: changed the test case so that proper handling of complex values is required.
Sum all integers from 1 to 2^n
Find the largest value in the 3D matrix
Return the first and last character of a string
Generate a vector like 1,2,2,3,3,3,4,4,4,4
Given a 4x4 matrix, swap the two middle columns
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