清空筛选条件
清空筛选条件

Nested Loop, Can someone help me to understand this code?

1 次查看（过去 30 天）
Kaouthar Bouyaouzan
评论： Kaouthar Bouyaouzan 2021-2-4
Inspect the (basic) functionality of the cumsum function, then implement your own (mycumsum). Only implement the functionality of the first 3 documentation lines, not all the special cases!
function Y = mycumsum(X)
%MYCUMSUM cumulative sum of elements.
Y = X;
[r,c] = size(Y);
for ii = 2:r
for jj = 1:c
Y(ii,jj) = Y(ii,jj) + Y(ii-1,jj);
end
end
end
Can someone help me to understand this code?

请先登录，再回答此问题。

采纳的回答

David Hill
David Hill 2021-2-3
function Y = mycumsum(X)
Y = X;
[r,c] = size(Y); %determine size of maxtrix
for ii = 2:r %1st row will stay constant, start at 2nd row
for jj = 1:c %go through all columns
Y(ii,jj) = Y(ii,jj) + Y(ii-1,jj); %first step Y(2,1)=Y(2,1)+Y(1,1) then Y(3,1)=Y(3,1)+Y(2,1),... this is the cumulative add of column
end
end
end

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Configure and View Diagnostics 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by