清空筛选条件
清空筛选条件

Function that returns 2 values

2 次查看（过去 30 天）
Spaceman
Spaceman 2024-3-19
回答： Spaceman 2024-3-23
Given : Your function header should look like the following:
function [Z,P]=myfun(A)
Find : Create a function myfun that accepts a matrix A as an input. The function should return 2 values...
  • Z - is the total number of elements in A that contain zeros
  • P - is the product of all values that are greater than 2
Issue: I created my function, and it makes sense to me, but I am still getting errors...
My Solution :
function [Z,P]=myfun(A)
Z=sum(A(A==0))
P=prod(A(A>2))
end
% Code used to call funtion:
% A=randi([-5 5],40);
% [Nzero,prod2]=myfun(A)
  7 个评论
显示 5更早的评论
Steven Lord
Steven Lord 2024-3-21
Recognizing what information a question is asking you is sometime difficult; schools often try to help students develop that skill via word problems starting at an early age, but it's not always easy.
Determining how to calculate that information can be just as tricky, though hopefully not as bad in MATLAB if you have access to the documentation. I tried searching for a phrase from your question in Help Center to see how helpful they'd be.
"number of elements" mostly found functions in the External Language Interfaces which would be good if you were writing code in a different language and calling it from MATLAB, but not quite what you're looking for.
Then I filtered the "number of elements" search to list just Functions (since I'm looking for a function to call to answer the question) and the first three hits look promising: numel, groupcounts, and nnz. numel and nnz are directly applicable to the question; groupcounts would require you to define "everything that's 0" as one group and "everything that's not 0" as another.
Spaceman
Spaceman 2024-3-23
Genius. Thanks to ALL of your expert advice, I think I got it in the right direction.
function [Z,P]=myfun(A)
Z=length(A(A==0));
P=prod(A(A>2));
end
% Code used to call funtion:
A=randi([-5 5],40);
[Nzero,prod2]=myfun(A)

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Spaceman
Spaceman 2024-3-23
function [Z,P]=myfun(A)
Z=length(A(A==0));
P=prod(A(A>2));
end
% Code used to call funtion:
A=randi([-5 5],40);
[Nzero,prod2]=myfun(A)

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Resizing and Reshaping Matrices 的更多信息

标签

产品


版本

R2023b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by