This must be coded in MATLAB. The function should be in a separate .m file than the main .m file.

Exercise 4 Write a function secret_code(s) that encrypts the text of a vector of characters s the following way: original character encrypted character z%%kii + + Check that the text "this is a top-secret information" is encrypted into "ihk+ k+ z iop-+%+r%i kn%orizikon