MATLAB: How to Permute the array with specific number

matrix array

I want to keep 1,2,6,7,9,10, they will not move
I have this array
b=[1,5,2,8,6,11,7,9,3,10]
P=perms(b);
HOw to use perms for 3,5,8,11 among 6 numbers above?

Best Answer

>> b = [1,5,2,8,6,11,7,9,3,10];
>> idx = ~ismember(b,[1,2,6,7,9,10]);
>> mat = repmat(b,factorial(nnz(idx)),1);
>> mat(:,idx) = perms(b(idx))
mat =
    1   11    2    8    6    5    7    9    3   10
    1   11    2    8    6    3    7    9    5   10
    1   11    2    5    6    8    7    9    3   10
    1   11    2    5    6    3    7    9    8   10
    1   11    2    3    6    8    7    9    5   10
    1   11    2    3    6    5    7    9    8   10
    1    8    2   11    6    5    7    9    3   10
    1    8    2   11    6    3    7    9    5   10
    1    8    2    5    6   11    7    9    3   10
    1    8    2    5    6    3    7    9   11   10
    1    8    2    3    6   11    7    9    5   10
    1    8    2    3    6    5    7    9   11   10
    1    5    2   11    6    8    7    9    3   10
    1    5    2   11    6    3    7    9    8   10
    1    5    2    8    6   11    7    9    3   10
    1    5    2    8    6    3    7    9   11   10
    1    5    2    3    6   11    7    9    8   10
    1    5    2    3    6    8    7    9   11   10
    1    3    2   11    6    8    7    9    5   10
    1    3    2   11    6    5    7    9    8   10
    1    3    2    8    6   11    7    9    5   10
    1    3    2    8    6    5    7    9   11   10
    1    3    2    5    6   11    7    9    8   10
    1    3    2    5    6    8    7    9   11   10
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