Your question is Set Diagonals of a Matrix to Zero. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Describe pseudocode to set the diagonals of a 10x10 matrix to zero. Focus on clarity and steps you would take to implement this in a data processing context at Akira Technologies.