index exceeds the number of array elements

I am trying to create a vector that stores a tally and if the tally k is greater than the number of elements in the vector I want it to create a larger vector and then keep changing the elements in the vector. It seems to be working for integers 1-3 but it errors out when I try to input 4. Why would this be?

function OrderCount = proj1(m)

OrderCount = zeros(1,1)

T = zeros(1,4)

for x1 = 0:m

for x2 = 0:m

for x3 = 0:m

for x4 = 0:m

T(1) = x1;

T(2) = x2;

T(3) = x3;

T(4) = x4;

k = 0;

while T(1) > 0 || T(2) > 0 || T(3) > 0 || T(4) > 0

NewT = T(1);

T(1) = abs(T(1)-T(2));

T(2) = abs(T(2)-T(3));

T(3) = abs(T(3)-T(4));

T(4) = abs(T(4)-NewT);

k = k + 1;

end

if k > length(OrderCount)

OrderCount(k+1) = 1;

else

OrderCount(k+1) = OrderCount(k+1)+1;

end

end

end

end

end

[cody madsen]

It also is creating a larger vector just fine for integers 1,2,3 but not 4

Answer 1

[Sai Bhargav Avula]

Hi,

Try changing the below mentioned part of the code to this.

if k > length(OrderCount)
   OrderCount(k+1) = 1;
else
   OrderCount(k+1) = OrderCount(k+1)+1;
end

The issue is when K = length of the OrderCount you are trying to access the next element of the array.

Hope this helps!