what correction is required in the code?

Question

Manav Divekar 2021-11-11

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1583889-what-correction-is-required-in-the-code

关闭： Cris LaPierre 2021-11-11

I am trying to perform 2*2 + 2*5 + 5*8, for [2 2 5 8] vector which is product of consicutive and sum of all. without using sum() & diff() and using for loop

function [out] = pairprodsum (m)
s = 0
for i = 1
	b = m(1:end-1).*m(2:end);
	s = s + b;
end
out = s;

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再回答此问题。

Answer 1

James Tursa 2021-11-11

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1583889-what-correction-is-required-in-the-code#answer_828849

If the homework assignment specifies you must use a loop, then I don't think the intent was for you to wrap a simple i=1 range around vectorized code. That being said, I suppose your "loop" technically qualifies.

b is a vector. You simply need to sum all the elements of b and return that. s = s + b does not sum the element of b ... it simply creates a new vector s that is a copy of b. You need different code to sum the elements of b. There are various ways to do this, which I will let you figure out.