C#:实现Recaman雷卡曼数序列算法(附完整源码)

using System.Collections.Generic;
using System.Numerics;

namespace Algorithms.Sequences
{
 
    public class RecamansSequence : ISequence
    {
      
        public IEnumerable<BigInteger> Sequence
        {
            get
            {
                yield return 0;
                var elements = new HashSet<BigInteger> { 0 };
                var previous = 0;
                var i = 1;

                while (true)
                {
                    var current = previous - i;
                    if (current < 0 || elements.Contains(current))
                    {
                        current = previous + i;
                    }

                    yield return current;
                    previous = current;
                    elements.Add(current);
                    i++;
                }
            }
        }
    }
}

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