Solve the question using MATLAB please, I need the code!

A matrix is tri-diagonal if 1) all the elements that are not in the main diagonal or cither of the adjacent diagonals arc zero and 2) it is a square matrix. For example, the following matrix is tri-diagonal. A = [13 23 0 0 17 0 7 0 0 -11 19 23 0 0 17 19] Write a program that determines if a matrix is tri-diagonal. The user must be notified only one time regarding the condition of the matrix. Test your program with the following matrix: B = [13 23 0 0 17 0 7 1 0 -11 19 23 1 0 17 19]