unrepeated integers from randi function

 for the randi function for example
randi([2,6],1,4)
this basically creates 4 random integers from 2 to 6
eg. 2, 5,4,2
how can i do the same but generating unrepeated integers?
in the example the integer 2 is repeated twice and i dont want that for a randi function of a large range

Answer 1

[Walter Roberson]

S = 2:6;
U = randperm(length(S));
S(U(1:4))