MATLAB中如何删除矩阵中的零？

这是我的问题：

我有一个nxnmatlab中的矩阵。我想删除这个矩阵的所有零并将其行放入向量中。为了n=4，假设我有以下矩阵：

A = [ 1 1 0 0
      1 2 0 0
      1 0 0 0
      1 2 1 0 ];

如何获得以下内容：

v1 = [ 1 1 ]; 
v2 = [ 1 2 ]; 
v3 = [ 1 ]; 
v4 = [ 1 2 1 ]; 

我做了以下事情：

for i = 1:size(A, 1)
    tmp = A(i, :);
    tmp(A(i, :)==0)=[];
    v{i} = tmp;
end

略快于迪瓦卡的回答:

nzv = arrayfun(@(n) nonzeros(A(n,:)), 1:size(A,1), 'uniformoutput', false);

标杆管理

小矩阵

A = randi([0 3],100,200);
repetitions = 1000;

tic
for count = 1:repetitions
  nzv =cellfun(@(x) nonzeros(x),mat2cell(A,ones(1,size(A,1)),size(A,2)),'uni',0);
end
toc

tic
for count = 1:repetitions
  nzv = arrayfun(@(n) nonzeros(A(n,:)), 1:size(A,1), 'uniformoutput', false);
end
toc

Elapsed time is 3.017757 seconds.
Elapsed time is 2.025967 seconds.

大矩阵

A = randi([0 3],1000,2000);
repetitions = 100;

Elapsed time is 11.483947 seconds.
Elapsed time is 5.563153 seconds.