At a minimum, you should make this problem variable. For example, find the element at the ith row and jth column and define i and j in the test cases, which are passed along with the function.
Back to basics 7 - Equal NaNs
Change the sign of even index entries of the reversed vector
Celsius to Kelvin
Find the sum of n squares
Determine whether the input is divisible by 3 as well as 5
find the mean of all elements in a matrix
Find the last digit
first element of matrix
multiply an array by its position number
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