Calculate the mean of corner elements of a matrix.
e.g. a=[1 2 3;
4 5 6;
7 8 9;]
Mean = (1+3+7+9)/4 = 5
Sort a list of complex numbers based on far they are from the origin.
Replace NaNs with the number that appears to its left in the row.
sum of non-primes
Create a v-notch vector without "sort" function
Find offset of an element of a multi dimensional matrix
Let's get back to school, and create multiplication tables
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