find rows with all but one nonzero element

hi,

after some calculation i get a matrix for example like this-

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

now from A i want to output the row with all but one nonzero element

B=[0 0 1 0]

which will be the 4th row in this example.

how do i do it?

Answer 1

[jonas]

Here's one way:

   A(sum(A,2)==1,:)

[Muhammad Ridwanur Rahim]

@jonas, thank you. can you also tell me based on the given matrix, how can i find the row with the highest number of zeros and output that entire row?

and also, the output if there are multiple rows with the same number of zeros.

thank you.

[jonas]

No problemo, just add this first line to the code:

target=min(sum(A,2))
A(sum(A,2)==target,:)

if you want to know the row index, then just type:

sum(A,2)==target

[Muhammad Ridwanur Rahim]

thank you