index error,exceeding array dimensions.

Hello Everyone,

I'm here to ask if there is anyone who can help me see where i am doing wrong because i really cannot see what i keep writing that is not accepted by the program

it gives out an error of exceeding index but i see no mistake in the input of the functions and the limits that the index has to run (from 1 until dim i.e)

what is confusing is the fact that it sometimes gives no mistake but lately the same writings have always gotten denied

function [Vet_ord] = ordina(Vet,dim)

for i=1:dim

k=i;

j=i+1;

while j<dim

if Vet(k)>Vet(j)

k=j;

end

j=j+1;

end

if i~=k

temp=Vet(i);

Vet(i)=Vet(k);

Vet(k)=temp;

end

Vet_ord=vet;

end

end

the warning is : index exceeds the number of array elements.

Index must not exceed 1.

Error in ordina (line 6)

if Vet(k)>Vet(j)

thanks everyone in advance for the help.

[Guilherme]

I think the error lies on your input. From your code, your input works up to

dim = numel(Vet)+1

If dim is greater than the number of itens that you have in your vector, it will arrive to a case where j < dim but you're getting out of your array limits. For instance, running with:

ordina([30,2,4,3,5],7)

You'll have a case where you try to acceed Vet(6) that does not exist.

[Dyuman Joshi]

What are the values of Vet (and the size of Vet) and dim as input to the function?

Also, you can modify the below code

if i~=k 
    temp=Vet(i);
    Vet(i)=Vet(k);
    Vet(k)=temp;
end

to a single line -

Vet([i k])=Vet([k i]);

[savino cataleta]

hello,thank you for the tips i appreciate it so much.

The Vet and the its dimension are given by the user in the main page in this form:

N=input('insert the array's dimension') ;

while the array is created by a function

V=createarray(N);

I'll try out your suggestion in order to see if it works that way.

again thanks a lot in advance .

[Image Analyst]

Did you see the solution below, in the official "Answers" section?

[Dyuman Joshi]

@savino cataleta is the value of Dim calculated from Vet or manually inputted?

If the former, why use it as an input when you can obtain the value in the code directly using inbuilt functions.

If the latter, you have to check that Dim and any other variables used in reference to Dim do not exceed the size of Vet.

Answer 1

[Sulaymon Eshkabilov]

Here is the corrected code:

Vet = randi([-9,9], 1, 7);
dim = numel(Vet)+1;
V = ordina(Vet,dim)

V = 1×7

-9 -6 -5 1 5 6 9

function Vet_ord = ordina(Vet,dim)

for i=1:dim-1                   %  Excess the dimension of Vet
    k=i;
    j=i+1;
    while j<dim-1               %  Excess the dimension of Vet
        if Vet(k)>Vet(j)
            k=j;
        end
        j=j+1;
    end
    if i~=k 
        temp=Vet(i);
        Vet(i)=Vet(k);
        Vet(k)=temp;
    end
    Vet_ord=Vet;               % The variable name has to be  Vet not vet
end  
end

[savino cataleta]

hello, i've just tried this out. it keeps telling me it goes over the dimension of the array but it is not true.

i can not understand where it goes wrong.