Sort using flow control

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Aggie
Aggie el 5 de Sept. de 2014
Editada: Star Strider el 5 de Sept. de 2014
I am new to MATLAB...first assignment and I have been tasked to build a MATLAB function that is to sort an array of numbers using flow control (smallest to largest). Then I am supposed to return the argument in a new similar array. Can anybody help me at least get started with this task?

Respuestas (2)

Sean de Wolski
Sean de Wolski el 5 de Sept. de 2014
function sorted = mysort(x)
sorted = sort(x);
end
  1 comentario
Aggie
Aggie el 5 de Sept. de 2014
I'm not allowed to use any built in MATLAB functions for sorting

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Star Strider
Star Strider el 5 de Sept. de 2014
This is how I would do the sorting:
x = randi(20,50,1);
x = x(:);
srtd = [];
for k1 = 1:length(x)
[sx,ix] = min(x);
srtd = [srtd; sx];
x(ix) = [];
end
The ‘srtd’ array would be the returned output.
  2 comentarios
Aggie
Aggie el 5 de Sept. de 2014
Does this output the answer in the same "shape" as the original array?
Thanks
Star Strider
Star Strider el 5 de Sept. de 2014
Editada: Star Strider el 5 de Sept. de 2014
My pleasure!
You said ‘array’ and I read ‘vector’. This corrects my oversight.
This will work for an (NxM) matrix:
x = randi(50,20,2); % Argument
[ar,ac] = size(x);
for k1 = 1:ac
svct = [];
xa = x(:,k1);
for k2 = 1:ar
[sx,ix] = min(xa);
svct = [svct; sx];
xa(ix) = [];
end
srtd(:,k1) = svct;
end
Run it and see if it works for you. The returned array ‘srtd’ is the same size as ‘x’, the input argument matrix (or vector). If you want to sort in descending order, replace min with max.

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