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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Misc
{
//
public class RList<T>:List<T>
{
int tailer_no;//尾部对应的编号,每个数据，有唯一的编号。当是环状数组，数据会被覆盖，编号就会对应不上序号。序号一定可以转为编号
int cap;
public RList(int cap):base(cap)
{
this.cap = cap;
tailer_no = 0;
}
public T RAdd(T dat)
{
Add(dat);
tailer_no++;
T ret = default(T);
if (Count > cap)
{
ret = this.ElementAt(0);
RemoveAt(0);
}
return ret;
}
public T[] ToArray(int index, int count)
{
return GetRange(index, count).ToArray();
}
public int Index2No(int index)
{
return index - (this.Count - 1) + tailer_no;
}
public int No2Index(int no)
{
int index = no - tailer_no + (this.Count - 1);
return index;
}
public int GetLastNo()
{
return tailer_no;
}
}
}