#include <iostream>
#include <cstdlib>
#include <time.h>
#include <string>
using namespace std;
#include<iostream>
using namespace std;
class BST
{
struct node
{
int data;
node* left;
node* right;
};
node* root;
node* makeEmpty(node* t)
{
if(t == NULL)
return NULL;
{
makeEmpty(t->left);
makeEmpty(t->right);
delete t;
}
return NULL;
}
node* insert(int x, node* t)
{
if(t == NULL)
{
t = new node;
t->data = x;
t->left = t->right = NULL;
}
else if(x < t->data)
t->left = insert(x, t->left);
else if(x > t->data)
t->right = insert(x, t->right);
return t;
}
node* findMin(node* t)
{
if(t == NULL)
return NULL;
else if(t->left == NULL)
return t;
else
return findMin(t->left);
}
node* findMax(node* t)
{
if(t == NULL)
return NULL;
else if(t->right == NULL)
return t;
else
return findMax(t->right);
}
node* remove(int x, node* t)
{
node* temp;
if(t == NULL)
return NULL;
else if(x < t->data)
t->left = remove(x, t->left);
else if(x > t->data)
t->right = remove(x, t->right);
else if(t->left && t->right)
{
temp = findMin(t->right);
t->data = temp->data;
t->right = remove(t->data, t->right);
}
else
{
temp = t;
if(t->left == NULL)
t = t->right;
else if(t->right == NULL)
t = t->left;
delete temp;
}
return t;
}
void inorder(node* t)
{
if(t == NULL)
return;
inorder(t->left);
cout << t->data << " ";
inorder(t->right);
}
node* find(node* t, int x)
{
if(t == NULL)
return NULL;
else if(x < t->data)
return find(t->left, x);
else if(x > t->data)
return find(t->right, x);
else
return t;
}
public:
BST()
{
root = NULL;
}
~BST()
{
root = makeEmpty(root);
}
void insert(int x)
{
root = insert(x, root);
}
void remove(int x)
{
root = remove(x, root);
}
void display()
{
inorder(root);
cout << endl;
}
void search(int x)
{
root = find(root, x);
cout << root->data << endl;
}
};
int main()
{
BST k;
int tab[100000];
srand(time(0));
for(int i=0;i<1000000;i++)
{
tab[i]=rand()%10000000+1;
cout<< tab[i]<<"\n\n";
}
k.insert(1000000);
getchar();
return 0;
}
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