Define permutation map on {1,2,3}

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Reza Yaghmaeian
Reza Yaghmaeian on 26 Feb 2022
Answered: Voss on 26 Feb 2022
I want to define a function which .
How could I do this?

Answers (1)

Voss
Voss on 26 Feb 2022
% you can index into a vector:
S_vec = [2 3 1];
% or you can define an anonymous function:
S_func = @(x)mod(x,3)+1;
% they work the same:
S_vec(1)
ans = 2
S_vec(2)
ans = 3
S_vec(3)
ans = 1
S_func(1)
ans = 2
S_func(2)
ans = 3
S_func(3)
ans = 1
% and both work for vector inputs:
S_vec([1 2 3])
ans = 1×3
2 3 1
S_func([1 2 3])
ans = 1×3
2 3 1

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