對樹的幾個基本操作函數

//顯示樹中所有節點的值
void show(tnode<int> *root)
{
 if (root)
 {
  cout<< root->value<<"/n";
  show(root->left);
  show(root->right);
 }
}

//輸入樹的每層節點值
void GetLayer(tnode<int>*root,vector<int>& v)
{
 if (root == NULL)
  return ;

 queue< tnode<int>* > q;
 tnode<int> *p;
 q.push(root);

 while( !q.empty())
 {
  p = q.front();
  v.push_back(p->value);
  q.pop();

  if (p->left != NULL)
   q.push(p->left);
  if (p->right != NULL)
   q.push(p->right);
 }
}

//計算樹的分葉節點個數
void CountLeaf(tnode<int>*root, int &nCount)
{
 if ( NULL == root)
  return;

 if ( (NULL ==root->left ) && (NULL == root->right) )
    ++nCount;
    CountLeaf(root->left, nCount);
 CountLeaf(root->right,nCount);
}

//計算樹深度
int CoutDepth(tnode<int>*root)
{
 int depthLeft = 0, depthRight = 0, depthVal = 0;

 if ( NULL == root)
  depthVal = - 1;
 else
 {
  depthLeft = CoutDepth(root->left);
  depthRight= CoutDepth(root->right);

  depthVal = 1 + (depthLeft > depthRight ? depthLeft : depthRight);
 }

 return depthVal;
}

//樹節點的個數
void nodeCout(tnode<int>*root, int &n)
{
 if (NULL == root)
  return;
 if (root)
 {
  ++n;
  nodeCout(root->left,n);
  nodeCout(root->right,n);
 }
}

//複製樹
tnode<int>* Copy(tnode<int>*root)
{
 tnode<int>*left, *right, *newNode;

 if (NULL == root)
  return NULL;

 left = Copy(root->left);
    right = Copy(root->right);

 newNode = new tnode<int>(root->value,left,right);

 return newNode;

}