How to shift diffrent rows with diffrent shift positions in matlab?

I want to right shift each row of P with different shift position.

P =

1111100100000000

0000100000000000

0000001110000000

1111110010000000

Here, class(P) = char . I want:

P =

1111111111111001

0000000000001000

0000000000000111

0000000111111001

Follwong code i have used for determining the number of shift positions:

[rows cols] = size(P); %4 , 16
x = zeros(rows,cols);
k =1;
for i = 1:rows
    c=0;
        for m = cols:-1:9  %This loop  finds the number of 0s with in 16 to 9 %column for each rows and stops when it gets 1 with in these columns.

              if (P(i,m) == '0') 
                  c = c+1;
                  else (P(i,m) == '1'), break, 
              end
          end
          c
      end

Here c is the number of right shift position for each rows but how this right shift operation can be performed?

And while shifting, column 1 value of each row (P(:,1)) will be filled instead of zero filling at left side.

How this shift operation can ne performed?

Answer 1

[Sean de Wolski]

Without looking too much into your code, it looks like circshift might be your friend.

doc circshift

Answer 2

[Andrei Bobrov]

A = ['1111100100000000'
'0000100000000000'
'0000001110000000'
'1111110010000000']
Aout1 = [circshift(A(1:2,:),[ 0 8]);circshift(A(end-[1 0],:),[ 0 7])]
Aout1(1,1:strfind(Aout1(1,:),'011'))='1'

or

A = [A(1:2,[9:end,1:8]);A(3:4,[10:end,1:9])];
A(1,1:8) = '1'