What is the function of [~,n]=size(p) in MATLAB?

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syedzainnasir

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What is the function of [~,n]=size(p) in MATLAB?

Question: 06-Mar-2017

In: MATLAB Projects

I've searched on the internet, but I can't figure out what this expression is useful for.

[code]function [val]=f_obiectiv(p) % functia obiectiv din problema celor n regine
%{ 
gradul de "neconformitate" a unei permutari: numarul de pozitii distincte de pe tabla 
de sah pentru care reginele plasate in acele pozitii sunt in situatie de atac 
%}

[~,n]=size(p);  

val=0;

for i=1:n
    for j=i+1:n
        if(abs(i-j)==abs(p(i)-p(j)))
            val=val+1;
        end;
    end;
end;

% calitatea permutarii: numarul total de perechi de pozitii (regine) posibile - 
% numarul de perechi "neconforme" 

val=n*(n-1)/2-val;

end[/code]