數據結構與算法 - C#實現廣義樹(2)

public  override object Key{get{return this.key;}}
         public  override uint Degree{get{return this.degree;}}
         //public  override uint Height{get{return this.height;}}
         public  override bool IsEmpty()// property takes the place of IsEmpty()
         {
              return false;//generaltree won't be empty for ever
         }
         public  override bool IsLeaf()
         {
              return this.degree==0;//if this tree's degree is zero, it means the tree has no subtrees, so it is leaf certainly
         }
         //overwrite Object.Equals() ---  reference  type   realization
         public override bool Equals(object _obj)
         {
              if( !base.Equals(_obj) )
                   return false;//基類比較不相等，則不相等
              //基類中的一些條目在此可免去
              //在基類中已判定其為GeneralTree類型，故轉型不會失敗
              GeneralTree tmpTree=(GeneralTree)_obj;
              //比較引用成員
              if( !Object.Equals(this.treeList,tmpTree.treeList) )
                   return false;
              //比較值類型成員
              return true;
         }
     }
}