There are several ways to locate and remove nans in a matrix, and return an 1d row vector.
In this problem the challenge is to do it within a set time as measured by tic-toc.
The problem will be run numerous times and an average time tested.
Note: I noticed a rare failure depending on when I ran the testsuite, so you might have to resubmit your code if it runs faster on your machine than the limit set here.
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