You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: randSample.m
    path of file: ./repos/MCITF/Code/MCITF/EdgeBox/piotr_toolbox/toolbox/matlab
    
    the code of the file until where you have to start completion: function r = randSample( n, k, isArray )
% Generate values sampled uniformly without replacement from 1:n.
%
% If n is an integer, samples k values from 1:n without replacement. If n
% is an array, samples k values without replacement from n. This function
% implements much of the same functionality as randsample.m in the
% Statistics Toolbox.
%
% USAGE
%  r = randSample( n, k, [isArray] )
%
% INPUTS
%  n           - specifies sampling source (if array) or range (if scalar)
%  k           - the number of samples to draw
%  isArray     - [0] if true treat n as an array (even if has single elt)
%
% OUTPUTS
%  r           - k uniformly generated random samples
%
% EXAMPLE
%  r = randSample( 10, 5 )
%  r = randSample( [ 5 6 8 9 32 45 ], 2 )

    
function r = randSample( n, k, isArray )
% Generate values sampled uniformly without replacement from 1:n.
%
% If n is an integer, samples k values from 1:n without replacement. If n
% is an array, samples k values without replacement from n. This function
% implements much of the same functionality as randsample.m in the
% Statistics Toolbox.
%
% USAGE
%  r = randSample( n, k, [isArray] )
%
% INPUTS
%  n           - specifies sampling source (if array) or range (if scalar)
%  k           - the number of samples to draw
%  isArray     - [0] if true treat n as an array (even if has single elt)
%
% OUTPUTS
%  r           - k uniformly generated random samples
%
% EXAMPLE
%  r = randSample( 10, 5 )
%  r = randSample( [ 5 6 8 9 32 45 ], 2 )
%
% See also randperm
%
% Piotr's Computer Vision Matlab Toolbox      Version 2.50
% Copyright 2014 Piotr Dollar.  [pdollar-at-gmail.com]
% Licensed under the Simplified BSD License [see external/bsd.txt]

if( nargin<3 ), isArray=0; end