It needs more than one test
agree! it is easy to cheat!
to easy to cheat
The only valid excuse for cheating is when the test suite is broken since we cannot fix it. Kobayashi Maru.
Remove NaN ?
2 b | ~ 2 b
Create a square matrix of multiples
Replicate elements in vectors
Find the hypotenuse
vectorization in N
Duplicate each element of a vector.
Create a matrix X, where each column is a shifted copy of the vector v
First non-zero element in each column
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
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