Index exceeds matrix dimensions while using a for loop

Question

Jeroen Bouma 2016-11-28

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/314435-index-exceeds-matrix-dimensions-while-using-a-for-loop

评论： Jeroen Bouma 2016-11-28

I tried to make a simple program to find a specific set of numbers, but when I run it, it says "Index exceeds matrix dimensions". The line that causes an issue is "if(r(i+1)==2)"

does anyone know what the problem could be? I don't see it. r is a 10000x1 matrix, so I believe the dimensions are alright.

 x=0
 while (x==0)
    n=10000
 r = randi([0 9],n,1);
    for i=1:n
        if(r(i)==1)
            if(r(i+1)==2)
                if(r(i+2)==3)
                    if(r(i+3)==4)
                        if(r(i+4)==5)
                            if(r(i+5)==6)
                                if(r(i+6)==7)
                                    if(r(i+7)==8)
                                        if(r(i+8)==9)
                                            display('found')
                                            display(i)
                                            x=1
                                        end
                                    end
                                end
                            end
                        end
                    end
                end
            end
        end
    end
end