how to end a loop at second last iteration?

I have an array. I want to add zero at its beginning. e.g my array has 761 elements. 'd' is array which has 761x1 dimension in this case. i want to make 762 elements by adding first element as zero. gFx has dimension of 762x1 so i created a new array of zeros having size of gFx. then i apply a for loop.it worked, but it exceeds matrix dimensions. i also used break statement but it didn't work.so if someone knows whats wrong ,feel free to help!

[a,b]=size(gFx);

new_d=zeros(a,b);

for i=1:length(gFx)

    if (d(i)~=0)

        new_d(i+1)=d(i)

        if (new_d(i+1)==length(gFx))

            break

        end

    end

end

[Kevin Chng]

Try

new_d(1) = 0;
b = length(d);
new_d(2:1+b) = d;

Answer 1

[Star Strider]

I would do:

d = [0; d];