MATLAB: How to make an array with randomly choose from another matrix

matrix arrayrandom

A=[1 2 7 9] => how to build A like this> A=[1 1 2 2 7 7 9 9]
B=[3 5 6 8 10 11] : randomly choose all items from Band input between 2 same number of A
for example : C=[1 8 6 1 2 5 3 2 7 11 7 9 10 9]

Best Answer

First One:
A=[1 2 7 9] => how to build A like this> A=[1 1 2 2 7 7 9 9]
result=repelem(A,2)
2nd One: 
>> A=[1 2 7 9];
>> B=[3 5 6 8 10 11];
>> c1=[A,B];
>> C=c1(randperm(10))
%.................^.....length Required
C =
     5     1     6     9    10     3     8     7    11     2
Or Check here
>> A=[1 2 7 9];
>> A=repelem(A,2)
A =
     1     1     2     2     7     7     9     9
>> B=[3 5 6 8 10 11];
>> c1=[A,B];
>> C=c1(randperm(length(c1)))
C =
     8     1    11     5    10     9     3     1     7     6     9     7     2     2
Related Question