row circular shift in matrix

How can I shift all the elements of a particular row in matrix in left circular shift or right circular shift.

Answer 1

[Tommy]

M(row,:) = [M(row,end) M(row,1:end-1)]; % shift to the right
M(row,:) = [M(row,2:end) M(row,1)]; % shift to the left

(edit) To shift by any amount:

M = randi(10,5)
shift = 8; row = 2;
[n,m] = size(M);
M(row,:) = [M(row,(end-mod(shift,m)+1):end) M(row,1:(end-mod(shift,m)))] % shift to the right
M(row,:) = [M(row,(mod(shift,m)+1):end) M(row,1:mod(shift,m))] % shift to the left

(edit) Fixed mistake

[Abhishek Bakhla]

thank you.

[Abhishek Bakhla]

Hi, it seems to me that shift to left by any amount is not working could you please verify ?

[Tommy]

Yes sorry I goofed! I used n where I should've used m. Let me know if that fixes it for you.

Answer 2

[Stephen23]

Simpler using circshift, where k<0 shifts to the left and k>0 shifts to the right:

M(row,:) = circshift(M(row,:),k,2)

[Abhishek Bakhla]

thank you.