i dont know whats the problem with this fails with variable test

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Shekhda Dhrumil 2020-8-1

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https://ww2.mathworks.cn/matlabcentral/answers/573754-i-dont-know-whats-the-problem-with-this-fails-with-variable-test

评论： Image Analyst 2020-8-2

function [summa index]=max_sum(v,n)
m=zeros(1,length(v));
x=zeros(1,length(v));
j=1;
if n>length(v)
    summa=0;
    index=-1;
    
elseif n<length(v)
    for ii=1:length(v)
        if ii<=length(v)-n+1
           x=v(:,ii:n+ii-1);
           m(ii)=sum(x); 
        else   
            x=v(:,ii:length(v));
            z=v(:,1:j);
            m(ii)=sum(x)+sum(z);
            j=j+1;
        end
    end
    [y i]=max(m);
    summa=max(y);
    index=max(i);
else
    summa=sum(v);
    index=1;
end

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Mario Malic 2020-8-1

编辑：Mario Malic 2020-8-1

We also don't know what's the problem. Could you tell us?

What is this?[summa index]

Shekhda Dhrumil 2020-8-1

here v is an array,n is a number.

we have to make continuous group of n element from v.

then we need to find whose sum is highest and then we need to provide that highest sum as output in summa and the index of first element of that group in output argument index.

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回答（1 个）

Image Analyst 2020-8-1

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/573754-i-dont-know-whats-the-problem-with-this-fails-with-variable-test#answer_473779

编辑：Image Analyst 2020-8-1

When you do

m(ii)=sum(x);

x is a 2-D array. So sum(x) is a 1-D array, because it's summing each column, and you're trying to put a whole array into a single element, the ii'th element of m. What do you intend to sum? The whole array? If so, do this:

m(ii)=sum(x(:));