you should concatenate the elements of a matrix in one dimensional array, for example if the input is
A = [1 2 3; 4 5 6; 7 8 9];
the output will be like this:
B = [1 2 3 4 5 6 7 8 9];
Back to basics 8 - Matrix Diagonals
Determine Whether an array is empty
Solve Linear equations
Sum of the Multiplication of Vectors
sum all digits
determine the sum of the squares
No more zeros
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