Determine Whether an array is empty
03 - Matrix Variables 6
Length of a short side
Replace every 3rd element in a vector with 4
Select primes from the matrix.
Find sum of negative elements in row.
Opposite task convert string hexadecimal numbers array into array of decimal numbers .
Set x value to each odd index of vector y.
Convert array of decimal numbers into hexadecimal numbers array.
Find product of eigenvalues of n*n magic matrix.
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