#include <iostream>
using namespace std;
struct wezel
{
wezel *up;
wezel *left;
wezel *right;
int dane;
};
wezel *root = NULL;
void add(int temp)
{
wezel *nowy;
nowy = new wezel;
nowy->dane=temp;
nowy->up=NULL;
nowy->left=NULL;
nowy->right=NULL;
if(root==NULL){
root=nowy;
}
else{
wezel *x=root;
wezel *p=x;
while(x!=NULL){
p=x;
if(nowy->dane<x->dane)
x=x->left;
else
x=x->right;
}
if(nowy->dane<p->dane)
p->left=nowy;
else
p->right=nowy;
nowy->up=p;
}
}
void order(wezel* p){
if(p!=NULL)
{
order(p->left);
cout<<p->dane<<" ";
order(p->right);
}
}
wezel *szukaj(int s, wezel *xs){
if(xs==NULL || xs->dane==s)
return xs;
else
if(s<xs->dane)
return szukaj(s,xs->left);
else
return szukaj(s,xs->right);
}
wezel *usun(int u,wezel *xu)
{
wezel *temp=szukaj(u,root);
if(temp->left==NULL && temp->right==NULL){
if(temp->up->right==temp)
temp->up->right=NULL;
else
temp->up->left=NULL;
delete temp;
}
}
int main(int argc, char* argv){
add(5);
add(3);
add(8);
add(1);
add(4);
add(6);
add(10);
add(7);
add(12);
order(root);
cout<<"\n\n";
cout<<szukaj(12,root);
cout<<"\n\n";
usun(12,root);
order(root);
return 0;
}
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