osu/osu.Game/Configuration/RandomSelectAlgorithm.cs

// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE

using System.ComponentModel;

namespace osu.Game.Configuration
{
   public enum RandomSelectAlgorithm
    {
        [Description("Never repeat")]
        RandomPermutation,
        [Description("Random")]
        Random
    }
}