有n个结点的二叉树的存储结构, L[i]和R[i]分别指
示结点i的左孩子和右孩子,0表示空。试写一个算法
判别结点u是否为结点v的子孙。
要求实现以下函数:
Status Dencendant(Array1D L,Array1D R,int n,int u,int v);
/* If node 'u' is the dencendant of node 'v', */
/* then return 'TRUE' else return 'FALSE'. */
/* L[i] is the left child of the i_th node, */
/* R[i] is the right child of the i_th node */
/* in the Binary Tree which has n nodes. */
一维数组类型Array1D的定义:
typedef int Array1D[MAXSIZE];
Status Dencendant(Array1D L,Array1D R,int n,int u,int v)
/* If node 'u' is the dencendant of node 'v', */
/* then return 'TRUE' else return 'FALSE'. */
/* L[i] is the left child of the i_th node, */
/* R[i] is the right child of the i_th node */
/* in the Binary Tree which has n nodes. */
{
if(L[v]==0 && R[v]==0)
return FALSE;
for(int i=0; i<n; i++){
if(L[v]==u || R[v]==u)
return TRUE;
else{
if(Dencendant(L,R,n,u,L[v]) || Dencendant(L,R,n,u,R[v]))
return TRUE;
else
return FALSE;
}
}
}