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Function `std.random.randomShuffle`

Shuffles elements of r using gen as a shuffler. r must be a random-access range with length. If no RNG is specified, rndGen will be used.


						
				Range randomShuffle(Range, RandomGen)
				(
				

				  Range r,
				

				  ref RandomGen gen
				

				)
				

				if (isRandomAccessRange!Range && isUniformRNG!RandomGen);
				

				

				Range randomShuffle(Range)
				(
				

				  Range r
				

				)
				

				if (isRandomAccessRange!Range);

Parameters

Name	Description
r	random-access range whose elements are to be shuffled
gen	(optional) random number generator to use; if not specified, defaults to `rndGen`

Returns

The shuffled random-access range.

Example

auto rnd = MinstdRand0(42);

auto arr = [1, 2, 3, 4, 5].randomShuffle(rnd);
version (X86_64) // Issue 15147
writeln(arr); // [3, 5, 2, 4, 1]

Authors

Andrei Alexandrescu Masahiro Nakagawa (Xorshift random generator) Joseph Rushton Wakeling (Algorithm D for random sampling) Ilya Yaroshenko (Mersenne Twister implementation, adapted from mir-random)

License

Boost License 1.0.