This would be better as "find the nth element of an array." Also, a column matrix doesn't exist. Perhaps you meant column vector, though the variables in your test cases are row vectors.
Return the largest number that is adjacent to a zero
Find the logic
Area of an Isoceles Triangle
Concatenate two strings
Create an anti-identity matrix
Calculating selling price
modulus of a number
find a specific element from an matrix
Find remainder when x is divided by 3
multiply an array by its position number
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