How to create code for toeplitz matrix

I have Y = [1,2,3,4] and I want to create

YY =

[1 2 3 4

2 1 2 3

3 2 1 2

4 3 2 1]

YY = toeplitz (Y(1,1:4)) can easily give me this result. However, I will like to create my own code.

I will appreciate any help.

Answer 1

[Tesfaye Girma]

fipref('NumericTypeDisplay','short');

format short g

a = fi([1 2 3],true,8,5)

b = fi([1 4 8],true,16,10)

toeplitz(a,b)

[Telema Harry]

Thank you for your response. Can one do this using a for loop ?