What is a R program to examine each column and identify the row index that contains the greatest value for a square matrix of size k. For instance, if the matrix contains the elements:
1, 3, 4
2, 0, -5
1, 8, 9
Your code ought to output [2,3,3].
What is the code for identifying the column index that has the highest values among each row's values? For the matrix mentioned above, for instance, the code should return [3,1,3].
Assume that there will only be one index with the highest value per row or column.