/* Root -> Left Subtree-> Right Sub-tree */
void preOrderTraverse(struct node *root)
{
if (root == NULL)
return;
printf(" [%d] ", root->val);
preOrderTraverse(root->left);
preOrderTraverse(root->right);
}
void preOrderTraverse(struct BSTNode* root){
if(root == NULL)
return;
printf("Node value : %d\n",root->value);
preOrderTraverse(root->left);
preOrderTraverse(root->right);
return;
}
//算法6.1，有改动P129
//先序递归遍历T，对每个结点调用函数visit一次且仅一次
void preOrderTraverse(BiTreeLink T,int(*visit)(TElemType)){
//T不空
if(T){
//先访问根结点
(*visit)(T->data);//visit指向函数的入口地址
preOrderTraverse(T->lchild,visit);//再先序遍历左子树
preOrderTraverse(T->rchild,visit);//再先序遍历右子树
}
}
/*
Pre-order traversal.
Visit each node before recursively visiting its children, left to right.
Root visited first
*/
void preOrderTraversalLCRSTree(Tree *t, void *key, ProcessItem processItem, compareTo compare){
List *list = NULL;
preOrderTraverse(t->root, processItem, list, compare);
}
int main()
{
int nodes;
printf("Your first BST...\n");
printf("Enter number of nodes..");
scanf("%d", &nodes);
int num = 0;
int val;
/* Initialize tree root node */
struct node *root = NULL;
/* TCreation of BST */
for (; num <nodes; num++) {
int val;
scanf("%d", &val);
root = EnterNode(root, val);
}
/* Traversal */
printf("\nNow print PreOrder Traversal..");
preOrderTraverse(root);
printf("\nNow print PostOrder Traversal..");
postOrderTraverse(root);
printf("\nNow print InOrder Traversal..");
inOrderTraverse(root);
/* Deletion of a node */
printf("\n Now we want to delete a node in BST..\n");
printf("Enter value of node to be deleted...\n");
scanf("%d", &val);
// DeleteNodeInBST(root, val);
/* Finding a node */
printf("\n Now we want to Find a node in BST..\n");
printf("Enter value of nodes to be found...\n");
scanf("%d", &val);
FindNodeInBST(root, val);
}
void main(){
int i;
BiTreeLink T,p,c;
TElemType e1,e2;
initBiTree(&T);
//判断数是否为空，求树的深度
printf("\nInit a Binary Tree!\nThe tree is empty or not?%d(1:yes 0:no);The tree depth=%d\n",biTreeEmpty(T),biTreeDepth(T));
//寻找根结点
e1 = root(T);
if(e1!=Nil)
printf("\nThe root of the Binary Tree is:'%c'\n",e1);
else
printf("\nThe Binary Tres has no root\n");
//请先序输入二叉树(如:ab三个空格表示a为根结点,b为左子树的二叉树)
printf("\nBuild a Binary Tree!like abc@@de@g@@f@@hi@j@@k@@,@stand for space\n");
createBiTree(&T);
//判断数是否为空，求树的深度
printf("\nThe tree is empty or not?%d(1:yes 0:no);The tree depth=%d\n",biTreeEmpty(T),biTreeDepth(T));
//寻找根结点
e1 = root(T);
if(e1!=Nil)
printf("\nThe root of the Binary Tree is:'%c'\n",e1);
else
printf("\nThe Binary Tres has no root\n");
//层序递归遍历(Of sequence to traverse the binary tree)
printf("\nlevel order Traverse the Binary Tree:\n");
levelOrderTraverse(T,visitT);
//先序遍历
printf("\npreOrder Traverse the Binary Tree:\n");
preOrderTraverse(T,visitT);
//中序递归遍历
printf("\n\ninOrder recursion Traverse the Binary Tree:\n");
inOrderTraverse(T,visitT);
//中序非递归遍历1
printf("\ninOrder non-recursion Traverse the Binary Tree 1:\n");
inOrderTraverse1(T,visitT);
//中序非递归遍历2
printf("inOrder non-recursion Traverse the Binary Tree 2:\n");
inOrderTraverse2(T,visitT);
//后序递归遍历
printf("\npostOrder recursion Traverse the Binary Tree:\n");
postOrderTraverse(T,visitT);
//修改结点
e1 = 'd';//原值
//scanf("%c",&e1);
p = point(T,e1);//获得e1对应的指针
//获得对应结点的值
printf("\n\nKnow the previous vaule is:'%c'\nEnter the new vlaue:\n",value(p));
e2 = 'r';//新结点的值
//scanf("%c",&e2);
assign(p,e2);//赋新值
//先序遍历
printf("preOrder Traverse the Binary Tree:\n");
preOrderTraverse(T,visitT);
//寻找双亲
e1 = parent(T,e2);
if(e1!=Nil) printf("\n\nthe parent of '%c' is : '%c'\n",e2,e1);
else printf("'%c' has no parent\n",e2);
//寻找左孩子
e1 = leftChild(T,e2);
if(e1!=Nil) printf("\nthe left child of '%c' is : '%c'\n",e2,e1);
else printf("'%c' has no left child\n",e2);
//寻找右孩子
e1 = rightChild(T,e2);
if(e1!=Nil) printf("\nthe right child of '%c' is : '%c'\n",e2,e1);
else printf("'%c' has no right child\n",e2);
//寻找左兄弟
e1 = leftSibling(T,e2);
if(e1!=Nil) printf("\nthe left sibling of '%c' is : '%c'\n",e2,e1);
else printf("'%c' has no left sibling\n",e2);
//寻找右兄弟
e1 = rightSibling(T,e2);
if(e1!=Nil) printf("\nthe right sibiling of '%c' is : '%c'\n",e2,e1);
else printf("'%c' has no right sibiling\n",e2);
//初始化需要插入的树
initBiTree(&c);//s=jk //这里有三个空格
printf("\nBuild the Binary Tree c which has no right child:\n");
c = (BiTreeLink)malloc(sizeof(BiTNode));
p = (BiTreeLink)malloc(sizeof(BiTNode));
c->lchild = p;
c->rchild = NULL;
c->data = 'm';
p->lchild = p->rchild = NULL;
p->data = 'n';
//createBiTree(&c);
//先序递归遍历
printf("\npreOrder Traverse the Binary Tree:\n");
preOrderTraverse(c,visitT);
//树s插到树T中，请输入树T中树s的双亲结点 s为左(0)或右(1)子树:
printf("\n\nInsert the Tree s to the Tree T,enter the parent of the Tree c in the Tree T,left Tree(0) and right Tree(1):\n");
e1= 'b';i = 0;//将子树c作为结点'b'的左子树
//scanf("%c%d",&e1,&i);
p = point(T,e1);//p是T中树c的双亲结点指针
insertChild(p,i,c);
//先序递归遍历
printf("\npreOrder Traverse the Binary Tree:\n");
preOrderTraverse(T,visitT);
// 删除子树,请输入待删除子树根结点 左(0)或右(1)子树
printf("\n\nDelete the Tree s,enter the root of the deleting Child Tree, left Tree(0) and right Tree(1):\n");
e1= 'b';i = 1;//删除父结点为'b'的右子树
p = point(T,e1);//p是T中树c的双亲结点指针
deleteChild(p,i);
//先序递归遍历
printf("\npreOrder Traverse the Binary Tree:\n");
preOrderTraverse(T,visitT);
//清空子树
clearBiTree(&T);
printf("\n\nEmpty the Binary Tree?%d(1:yes 0:no)\nThe tree depth=%d\n",biTreeEmpty(T),biTreeDepth(T));
//寻找根结点
e1 = root(T);
if(e1!=Nil)
printf("\nThe root of the Binary Tree is:'%c'\n",e1);
else
printf("\nThe Binary Tres has no root\n");
}
