How to generate a vector of two separate intervals without overlapping?

Assume that we have two vectors:

a = 1 2 3 4 5

b= 6 7 8 9 10

how can I generate a vector of random permutation of combining a and b so I can always get random permutation of a at first and then random permutation of b in vector c as below:

c = 1 2 3 4 5 6 7 8 9 10

or

c = 5 1 3 4 2 9 7 6 10 8

Answer 1

[Bruno Luong]

c = [a(randperm(length(a))) b(randperm(length(b)))]

[Hajem Daham]

Thanks Bruno, this is what I need.

[Hajem Daham]

What if I need to mix c form a followed always by number/s from b, in this case c should be as:

c = a b a b a b

for example

c = 1 2 6 7 3 4 8 5 9 10

and so on.

Thanks

[Bruno Luong]

Don't see the pattern.