MATLAB: How to make a symmetric matrix

Question

hey,

the assiment is a challange

-to create this matrix in one row of code by using Matlab methods ( also multiplying metrix and Vectors are permited ).

i cant write the matrix directly(also simple operations

example:

[1;1;1]+[2;2;2] to get [3;3;3].)

my wish to get the specific matrix:

B = [1 2 3 8 1 6 ; 2 1 0 3 5 7; 3 0 1 4 9 2; 8 3 4 1 0 3 ; 1 5 9 0 1 2; 6 7 2 3 2 1]

my intuition is to found some legality or somthing like that, and to use it to get a simple solution(1 row with the shortest way.).

B =
     1     2     3     8     1     6
     2     1     0     3     5     7
     3     0     1     4     9     2
     8     3     4     1     0     3
     1     5     9     0     1     2
     6     7     2     3     2     1

Answer 1

... make a symmetric matrix:

M = tril(randi([0 9],6),-1);
B = M + M' + eye(6);

Maybe use function toeplitz:

B = toeplitz(randi([0 9],6,1));