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.
Getting the indices from a vector
Generate a random matrix A of (1,-1)
07 - Common functions and indexing 1
Sum of diagonals elements of a matrix
Find out magnitude of vector
multiply an array by its position number
modulus of a number
first element of matrix
Find the last digit
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