Array indexing in matlab

Starting with

>> z = reshape([1:1:30],6,5)'

z =

1 2 3 4 5 6

7 8 9 10 11 12

13 14 15 16 17 18

19 20 21 22 23 24

25 26 27 28 29 30

what is the one-line command to access access the variable z to get the result:

1 2 23 24

7 8 29 30

Answer 1

[Voss]

z = reshape(1:30,6,5).' % [] not necessary; 1:1:30 is the same as 1:30; .' is transpose, ' is complex conjugate transpose

z = 5×6

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

[z([1 2],[1 2]) z([end-1 end],[end-1 end])]

ans = 2×4

1 2 23 24 7 8 29 30