find the sum by function

find the sum by function

[Sriram Tadavarty]

What is looked for here? Whats the output that is expected from the sample vector? Can you show the code that you tried and where you struck?

Answer 1

[Cristian Garcia Milan]

I think that your problem is the function definition. Actually you are using total as input and v as output and I think that your intention is the opposite. The function should be:

function [total]=grade_eyad(v)
    min(v);
    mean(v);
    v(min(v))=mean(v);
    total=sum(v)
end

When you have these code saved, you can use:

v=[12 9 6 10 13];
total=grade_eyad(v)

[Eyad Ramadan]

how i can replace the minimum grade by the average of grades , then calculate the sum of the grades ?

Answer 2

[Johannes Hougaard]

function total = grade_eyad(v)
    [~,idx] = min(v); %finding the position of the minimum value (3 in the given example)
    v(idx) = mean(v); %replacing the value (Christians code will replace the 6th element (13)
    total = sum(v);
end

or you could index in another way (will be better if there are more 6'es to be replaced)

function total = grade_eyad(v)
    v(v == min(v)) = mean(v); % find all instances where v equals min(v) by the == operator and replace by mean(v)
    total = sum(v);
end

[Eyad Ramadan]

when i use this work

function total = grade_eyad(v)

v=[12 9 6 10 13];

v(v == min(v)) = mean(v);

total = sum(v);

end

i do run , the result

>> grade_eyad

ans =

54

but i need total apper , not ans

this

>> grade_eyad

total =

54

how i can do this?

[Johannes Hougaard]

save the function as grade_eyad.m

Then you'll be able to call it from your workspace with an output with any name you like and with alterations to v (or use another variable name if desired).

v = [12 9 6 10 13];
total = grade_eyad(v)
w = [12 8 5 8 8 6 8 10 13 10 11];
total_w = grade_eyad(v)