How to remove some rows from the matrix according to conditions?

I have two matrices: the main matrix is:

u =

     0     0     0     5
     0     0     4     0
     0     0     4     5
     0     3     0     0
     0     3     0     5
     0     3     4     0
     0     3     4     5
     2     0     0     0
     2     0     0     5
     2     0     4     0
     2     0     4     5
     2     3     0     0
     2     3     0     5
     2     3     4     0
     2     3     4     5

the matrix which gives condition to the matrix u is matrix:

p =

     3
     4
here, numbers 3 and 4 means two conditions in order to remove rows from matrix u:

So, what I need to find is :

1) Find that rows where after number 3, also there are zeros: In this case, it is rows:

0 3 0 0

2 3 0 0 .

Remove this two rows from the matrix u.

2) Find that rows where just zeros until 4. In this case:

0 0 4 0

0 0 4 5

And delete this rows from the matrix u.

My matrix should be like : u =

     0     0     0     5
     0     3     0     5
     0     3     4     0
     0     3     4     5
     2     0     0     0
     2     0     0     5
     2     0     4     0
     2     0     4     5
     2     3     0     5
     2     3     4     0
     2     3     4     5

Could anyone help me?

Answer 1

[Star Strider]

One approach:

r3 = all(u(:,2:end) == repmat([3 0 0],size(u,1),1),2);
r4 = all(u(:,1:3) == repmat([0 0 4],size(u,1),1),2);
u = u(~r3 & ~r4,:)

u =
     0     0     0     5
     0     3     0     5
     0     3     4     0
     0     3     4     5
     2     0     0     0
     2     0     0     5
     2     0     4     0
     2     0     4     5
     2     3     0     5
     2     3     4     0
     2     3     4     5