separate and regenerate

2012 3 20
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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

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Wayne King
Wayne King 2012-3-20

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You can first transform the number into a string:
x = 3456;
y = num2str(x);
y = [y(1) '13' y(3:end)];
x1 = str2num(y);

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