Find vecor x.
Find the numeric mean of the prime numbers in a matrix.
Back to basics 7 - Equal NaNs
Reverse the elements of an array
UICBioE240 problem 1.17
Rotate array 90 degrees
Return the length of the longest word in the string.
Find the Sum of the Series:
Return ! if array element starts with a certain letter. Otherwise return ?
Find the sum of the negative elements under the main diagonal.
Find the product of the positive elements above the main diagonal.
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