Function names cannot begin with a number. Also, this is an extremely simple problem that has been posted many times. Please put more thought into problems before posting them.
I changed the problem slightly and added some more test cases.
Make the vector [1 2 3 4 5 6 7 8 9 10]
Make a checkerboard matrix
Return the largest number that is adjacent to a zero
Solve the set of simultaneous linear equations
Calculate the area of a triangle between three points
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