MATLAB Answers

How can I build a matrix with an increasing number of terms in each row?

4 次查看(过去 30 天)
Parker Pittman
Parker Pittman2021-10-14
编辑: Dave B ,2021-10-15
I'm trying to build a matrix which has an increasing number of summed terms in each row.
For example n = 1 would be the first row, the sum of n = 1 and n = 2 in the second row and so forth, all the way up through n = 50.
I believe the matrix should come out like
1
1 2
1 2 3

采纳的回答

Dave B
Dave B 2021-10-14
编辑:Dave B 2021-10-15
You can't have a matrix with a different number of elements on each row, but if you wanted the sums 1, 1+2, 1+2+3,... (as you describe):
n = 1:50;
sums = n.*(n+1)/2;
sums.'
ans = 50×1
1 3 6 10 15 21 28 36 45 55

更多回答(1 个)

Image Analyst
Image Analyst 2021-10-14
If you're willing to use a cell array instead of a regular matrix, you can do this:
n = 50;
ca = cell(n, n)
for row = 1 : n
for col = 1 : row
ca{row, col} = sum(1:col);
end
end
The "unused" cells will still be there but they will have null inside them.

标签

Community Treasure Hunt

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

Start Hunting!

Translated by