How to add the value of elements that have a value that is more than a certain boundary value in the vector automatically?

I don't know how to add value of my vector automatically. However I have two cluster for 'y' vector. That are the element of y less than 10 and the elements of y more than 10. This is the cluster code

yrendah=sum(y(:) <= 10);
ytinggi=sum(y(:) > 10);

In my algorithm, after I find the value of 'sx', I will update the value of 'y'. Where each element of 'y' which has a value of more than 10 will be added to the value of 'sx'. And for the element 'y' which has a value of less than 10 does not change. How do I add up each 'y' element that has a value of more than 10 with 'sx'?. This is my full code

clc;
clear all;
T=readtable('EVASUSANTIDATA.xlsx');
x1=T.PENDAFTARAN;
x2=T.TUNDA;
x3=T.KUOTA;
y=T.LAMA;
yn=length(y);
yrendah=sum(y(:) <= 10);
ytinggi=sum(y(:) > 10);
for i=1:yn
    if y(i)<=10
        c=x3(i);
        while y(i)<=10
            c=c-1;
            y(i)=(x1(i)+x2(i))/(c);
        end
        if y(i)>=10
               y(i)=(x1(i)+x2(i))/(c+1);
        end
    d=c+1;
    k(i)=x3(i)-d;
    
    end
    
end
sx=round(sum(k)/ytinggi);
sxx=rem(sum(k),ytinggi);

[Tommy]

Is this what you mean?

ind = y > 10; % indices of values in y that are greater than 10
y(ind) = y(ind) + sx; % increase those values by sx

Or maybe this instead?

ind = y > 10; % indices of values in y that are greater than 10
sx = sx + sum(y(ind)) % increase sx by sum of all of those values

[Eddy Iswardi]

the first. Thank you

[Eddy Iswardi]

Do you know how to add automatically 'sx' to the 8 elements with the highest value?

Answer 1

[David Hill]

y(ismember(y,maxk(y,8)))=y(ismember(y,maxk(y,8)))+sx;