MATLAB: Cut the last n of matrix row

Question

e.g i have matrix a :

1

2

3

4

5

6

7

i want to cut the last 2 row of matrix A ? and become

1

2

3

4

5

Answer 1

a = (1:7)'; n = 2;
A = a(1:end - n);

or

a(end - [n-1, 0]) = [];