AVL
#include<iostream> using namespace std; struct node { int v,height; node*lchild; node*rchild; int data; }; int x; node* newNode(int v) { node*Node =new node; Node->v=v; Node->height=1; Node->lchild=Node->rchild=NULL; return Node; } int getHeight(node* root) { if(root==NULL) return 0; return root->height; } int getBalanceFactor(node* root) { return getHeight(root->lchild)-getHeight(root->rchild); } void updateHeight(node* root) { root->height=max(getHeight(root->lchild),getHeight(root->rchild))+1; } void search(node* root,int x) { if(root==NULL) { printf("search failed\n"); return; } if(x==root->data) { printf("%d\n",root->data); } else if(x<root->data) { search(root->lchild,x); } else { search(root->rchild,x); } } void L(node* &root) { node*temp=root->rchild; root->rchild=temp->lchild; temp->lchild=root; updateHeight(root); updateHeight(temp); root=temp; } void R(node* &root) { node*temp=root->lchild; root->lchild=temp->rchild; temp->rchild=root; updateHeight(root); updateHeight(temp); root=temp; } void insert(node* &root,int v) { if(root==NULL) { root=newNode(v); return; } if(v<root->v) { insert(root->lchild,v); updateHeight(root); if(getBalanceFactor(root)==2) { if(getBalanceFactor(root->lchild)==1) { R(root); } else if(getBalanceFactor(root->lchild)==-1) { L(root->lchild); R(root); } } }else { insert(root->rchild,v); updateHeight(root); if(getBalanceFactor(root)==-2) { if(getBalanceFactor(root->lchild)==-1) { L(root); } else if(getBalanceFactor(root->lchild)==1) { R(root->lchild); L(root); } } } } node* Create(int data[],int n) { node* root=NULL; for(int i=0;i<n;i++) { insert(root,data[i]); } return root; } int main() { return 0; }
#include<iostream>
using namespace std;
struct node {
int v,height;
node*lchild;
node*rchild;
int data;
};
int x;
node* newNode(int v) {
node*Node =new node;
Node->v=v;
Node->height=1;
Node->lchild=Node->rchild=NULL;
return Node;
}
int getHeight(node* root) {
if(root==NULL) return 0;
return root->height;
}
int getBalanceFactor(node* root) {
return getHeight(root->lchild)-getHeight(root->rchild);
}
void updateHeight(node* root) {
root->height=max(getHeight(root->lchild),getHeight(root->rchild))+1;
}
void search(node* root,int x) {
if(root==NULL) {
printf("search failed\n");
return;
}
if(x==root->data) {
printf("%d\n",root->data);
} else if(x<root->data) {
search(root->lchild,x);
} else {
search(root->rchild,x);
}
}
void L(node* &root) {
node*temp=root->rchild;
root->rchild=temp->lchild;
temp->lchild=root;
updateHeight(root);
updateHeight(temp);
root=temp;
}
void R(node* &root) {
node*temp=root->lchild;
root->lchild=temp->rchild;
temp->rchild=root;
updateHeight(root);
updateHeight(temp);
root=temp;
}
void insert(node* &root,int v) {
if(root==NULL) {
root=newNode(v);
return;
}
if(v<root->v) {
insert(root->lchild,v);
updateHeight(root);
if(getBalanceFactor(root)==2) {
if(getBalanceFactor(root->lchild)==1) {
R(root);
} else if(getBalanceFactor(root->lchild)==-1) {
L(root->lchild);
R(root);
}
}
}else
{
insert(root->rchild,v);
updateHeight(root);
if(getBalanceFactor(root)==-2) {
if(getBalanceFactor(root->lchild)==-1) {
L(root);
} else if(getBalanceFactor(root->lchild)==1) {
R(root->lchild);
L(root);
}
}
}
}
node* Create(int data[],int n)
{
node* root=NULL;
for(int i=0;i<n;i++)
{
insert(root,data[i]);
}
return root;
}
int main()
{
return 0;
}