This one should work for all of the test cases except that you have some numerical precision issues with the last test case. Please replace it with a numerical comparison that takes into account precision (my code is returning numbers with no decimal point but the test code returns something less pretty).
Who knows the last digit of pi?
Matrix indexing with two vectors of indices
Split a string into chunks of specified length
Given a matrix, swap the 2nd & 3rd columns
Is the input divisible by 3?
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