values of matrix change on each iteration

if we want a matrix

A=[7x3] such that we iterate 100 times and its values chnage from 1 to 3 randomly on each iteration e.g

A=[1 1 1
   2 1 3
   1 2 1
   3 3 2
   3 1 2 
   1 1 1
   2 1 3]
and in next iteration it changes again

Answer 1

[Stephen23]

Just use randi:

 for k = 1:100
     A = randi([1,3],7,3)
 end

[summyia qamar]

thanks but how this works? if I simply use A = randi([1,3],7,3) then only one matrix shows. where is k in it to iterate?

[Stephen23]

"how this works": it generates a new random matrix in a loop, giving exactly what you requested.

"where is k in it to iterate?" I do not understand the question. The loop variable k is not used because it is not required to generate a new random matrix.