separate and regenerate

High everyone How can I separate the no. into several numbers ….change on of them and regenerate it. For example I have the following no. 3456 , how can I separate it into 3,4,5 and 6 numbers …. and for example change 4 into 13… and regenerate the no to be 31356

Answer 1

[Wayne King]

You can first transform the number into a string:

    x = 3456;
    y = num2str(x);
    y  = [y(1) '13' y(3:end)];
    x1 = str2num(y);