MATLAB: How can a matrix of randperm be generated with variable n*m

randomrandom number generator

I want to generate a matrix of n*m size, which looks like

where

n=3 
m=4
A=[randperm(m); randperm(m);randperm(m);]

These value may change with problem size. How can i generate this matrix since n and m vary? No loop please!

SImpler than you think.

M = 4;
N = 3;
[~,A] = sort(rand(M,N),1)
A =
     1     1     3
     4     2     1
     2     3     4
     3     4     2

a = -4;
b = 6;
r = (b-a).*rand(3,4) + a;

This works:

N = 3; 
M = 3;
a = (1:3)';
b = bsxfun(@plus, a, [0:M-1])
b =
     1     2     3
     2     3     4
     3     4     5