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## CGAL::random_selection

### Definition

random_selection chooses n items at random from a random access iterator range which is useful to produce degenerate input data sets with multiple entries of identical items.

#include <CGAL/random_selection.h>

template <class RandomAccessIterator, class Size, class OutputIterator, class Random>
OutputIterator |
random_selection ( | RandomAccessIterator first, RandomAccessIterator last, Size n, OutputIterator result, Random& rnd = default_random)
|  | chooses a random item from the range [first,last) and writes it to result, each item from the range with equal probability, and repeats this n times, thus writing n items to result. A single random number is needed from rnd for each item. Returns the value of result after inserting the n items. Precondition: Random is a random number generator type as provided by the STL or by Random.

### See Also

CGAL::perturb_points_2

Next: RandomConvexSetTraits_2

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The CGAL Project . Tue, December 21, 2004 .