How to check for a zero in any row of a particular column in an [50000, 50000]?
1 次查看(过去 30 天)
显示 更早的评论
So I have an array of [50000, 50000] full of zeros. I gradually add elements to it by replacing the zeros with the elements. I want to add elements to a randomly picked column such that the element is placed at a lowest position of row available with zero.
0 个评论
回答(1 个)
DGM
2021-4-27
Depends what you mean by "lowest position of row".
Consider the example:
firstzerorow = find(A(:,thiscolumn)==0,1,'first');
A(firstzerorow,thiscolumn) = mynumber;
or
lastzerorow = find(A(:,thiscolumn)==0,1,'last');
A(lastzerorow,thiscolumn) = mynumber;
0 个评论
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Resizing and Reshaping Matrices 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!