% Generate a Latin Square
% =============================
% for Matlab R13
% version 1.0 (feb 2010)
%
% Inputs
% ------------------
% N - Integer value for the size of the square.
%
% Inputs
% ------------------
% M - Your Latin Square
%
% Other functions
% -------------------
% RANDPERM(n) is a random permutation of the integers from 1 to n.
% For example, RANDPERM(6) might be [2 4 5 6 1 3].
%
% CUMSUM(X) is a vector containing the cumulative sum of the elements of X.
% Example: If X = [0 1 2
% 3 4 5]
% then cumsum(X,1) is [0 1 2 and cumsum(X,2) is [0 1 3
% 3 5 7] 3 7 12]
% (c) Richard Craig
% email: richard [ a t ] richard-craig.co.uk

% Download if too lazy to copy and paste

function [M] = latsq(N)

M = [randperm(N); ones(N-1,N)] ; % Generate Square
M = rem(cumsum(M)-1,N) + 1 ; % Add one due to base zero