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diff --git a/sourcecodes/bnt-master/KPMstats/sample.m b/sourcecodes/bnt-master/KPMstats/sample.m
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+++ b/sourcecodes/bnt-master/KPMstats/sample.m
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+function x = sample(p, n)
+% SAMPLE    Sample from categorical distribution.
+% Returns a row vector of integers, sampled according to the probability
+% distribution p.
+% Uses the stick-breaking algorithm.
+% Much faster algorithms are also possible.
+
+if nargin < 2
+  n = 1;
+end
+
+cdf = cumsum(p(:));
+for i = 1:n
+  x(i) = sum(cdf < rand) + 1;
+end