Selection by circular indexing

Hi

I have a vector :

v  = (1:10)';

I want to have a function that can select a segment of the vector from index "a" to index "b" such that if "a" is greater than "b", it loops back on the vector and starts from the beginning, i.e., I want the function

function y = circularSelect(v , a, b)
%%
end

such that

circularSelect(v , 7 , 2)

returns

[7, 8 ,9 ,10 , 1 , 2]

I'd like to know if there's a way to do it without using "if" statements, since it's quite trivial how to do it with an "if" statement.

thanks for your answers in advance

Answer 1

[Yazan]

function y = circularSelect(v, a, b)
N = length(v);
idx = a:b+N*(b<a);
idx(idx>N) = idx(idx>N)-N;
y = v(idx);
end

[mahdi Babayi semiromi]

Thanks