How to shift entries in a vector by the value of the number in that entry?

T = [0, 0, 4, 0, 7, 0, 0, 5, 0, 9]
T = 1×10
     0     0     4     0     7     0     0     5     0     9
N = numel(T);
X = 1+mod(T+(0:N-1),N);
for k = 1:N
    T([k,X(k)]) = [0,T(k)];
end
disp(T)
     0     7     5     0     0     0     4     0     9     0

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Tim David 2021-3-19

This is good, thank you. Is there a way to repeat this multiple times? Ie this method used again on the new T vector, then again on the resultant T vector and so on?

Stephen23 2021-3-19

"Is there a way to repeat this multiple times? Ie this method used again on the new T vector, then again on the resultant T vector and so on?"

Put it inside another loop.

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Answer 2

Robert U 2021-3-19

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https://ww2.mathworks.cn/matlabcentral/answers/777642-how-to-shift-entries-in-a-vector-by-the-value-of-the-number-in-that-entry#answer_652597

编辑：Robert U 2021-3-19

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Hi Tim David,

you can apply circshift() to the data.

T = [0, 0, 4, 0, 7, 0, 0, 5, 0, 9];
shiftme = @(A,nShift) circshift(A,A(nShift));
shiftme(T,3)

Kind regards,

Robert

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