How to select specific elements of a matrix and save them in another matrix?

Let's say I have matrix A=[1; 2 ;3; 6; 7 ;8 ;11 ;12 ;13]

I need a script which goes through matrix A one by one and defines the elements which A(k+1)-A(k)>1

then I need that elements to be saved in matrix B

so B=[6; 11]

Answer 1

[Fangjun Jiang]

B=A([false;diff(A)>1])

[MNRNI]

thanks.

do you know hiw we can solve it with a for loop?

when I use the following code, it saves the elements in matrix B on top of each other and matrix B shows only one element. which is B=[11]. any solution for that?

B=[];

for k=1:length(A)-1

if A(k+1)-A(k)>1

B=A(k+1);

end

end

[Fangjun Jiang]

close enough. replace with this line

B=[B;A(k+1)];