>> M = [1,1,1,1,1,1,0,0,0,0,0,0;1,1,1,1,1,1,1,1,0,0,0,1;1,1,1,1,1,0,0,0,1,0,0,1;1,1,1,1,1,1,0,0,0,1,0,1]
M =
1 1 1 1 1 1 0 0 0 0 0 0
1 1 1 1 1 1 1 1 0 0 0 1
1 1 1 1 1 0 0 0 1 0 0 1
1 1 1 1 1 1 0 0 0 1 0 1
>> cumprod(M,2)
ans =
1 1 1 1 1 1 0 0 0 0 0 0
1 1 1 1 1 1 1 1 0 0 0 0
1 1 1 1 1 0 0 0 0 0 0 0
1 1 1 1 1 1 0 0 0 0 0 0
Best Answer