public _Element Find(_Term x)
{
_Element result = null;
_Element temp;
for (int i = 0; i < mContent.Count; ++i)
{
temp = (_Element)mContent[i];
if (temp.IsBelong(x) == true)
{
result = new _Element(temp);
}
}
return(result);
}
public override String ToString()
{
String result = "{";
for (int i = 0; i < mContent.Count; ++i)
{
_Element temp = (_Element)mContent[i];
result += temp.ToString();
if (i < mContent.Count - 1)
{
result += ",";
}
}
result += "}";
return(result);
}
public void Add(_Element x)
{
mContent.Add(new _Element(x));
#region Doan sap xep cac phan tu, nhung ko giup cho viec thay the nhanh hon, nen ko ap dung nua (Nhung cach sap xep la dung)
/*
* int index1;
* int index2;
* _Element e;
* // Sap xep lai theo dang : {x/y, y/z, t/z, z/k} neu them {k/x} thi them vao dau
* for (index1 = 0; index1 < mContent.Count; ++index1)
* {
* e = (_Element)mContent[index1];
* if (x.Arg2.IsAppear(e.Arg1))
* break;
* }
* // co truoc {x/f(k), y/g(k), z/q(k)} can them vao {k/z} --> phai them vao sau {z/q(k)} them vao cuoi
* for (index2 = mContent.Count - 1; index2 >= 0; --index2)
* {
* e = (_Element)mContent[index2];
* if (e.Arg2.IsAppear(x.Arg1))
* {
++index2;
* break;
* }
* }
* // Truong hop {z/m, m/g(o), x/k, y/g(k), t/k} them vao {k/f(z)}
* if (index1 != mContent.Count && index2 != -1)
* {
* mContent.Insert(index2, new _Element(x));
* _Element temp = (_Element)mContent[index1];
* mContent.RemoveAt(index1);
* Add(temp);
* }
* else
* if (index1 != mContent.Count)
* mContent.Insert(index1, new _Element(x));
* else
* if (index2 != -1)
* mContent.Insert(index2, new _Element(x));
* else
*/
#endregion
}
public _Element(_Element p)
{
Init(p.mArg1, p.mArg2);
}
