Why does my vector repeat numbers?

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CalamityGoat 2015-4-28

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评论： Chad Greene 2015-4-28

So I am trying to sort a random array of integers and with my code everything works except certain numbers will repeat multiple times. I'm not sure what I am doing that's making it repeat but I think it has to do with me possibly overwriting my variable x(k).

 function y = sort(x)
  for k = 1:length(x)-1
    %  Compare x(k) with values in original array x
    for i = (k+1):length(x)
        if x(k) < x(i)
            temp = 0;
            temp = x(i);
            x(k) = temp;
        end
    end
    y = x;

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Stephen23 2015-4-28

Also note that you should avoid using i and j as variable names, as these are both names of the inbuilt imaginary unit.

Chad Greene 2015-4-28

Also be careful using i and j as variables. They're both built in as the imaginary unit. Overwriting them is usually not a problem, but when it is a problem, it can be hard to track down.

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采纳的回答

KL 2015-4-28

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编辑：KL 2015-4-28

在 MATLAB Online 中打开

    for j = 1:length(x)-1
     % Find jth smallest element
     imin = j;
     for i = (j + 1):length(x)
      if (x(i) < x(imin))
       imin = i;
      end
     end
      if (imin ~= j)
       val = x(imin);
       x(imin) = x(j);
       x(j) = val;
      end
   end