Implementation of binary search tree

Source: Internet
Author: User

Complexity O (LOGN)

1#include <queue>2#include <cstdio>3 using namespacestd;4 5 //represents the structure of a node6 structnode{7     intVal;8Node *lch,*RCH; 9 };Ten  One //Insert value x ANode *intsert (node *p,intx) - { -     if(p==NULL) { theNode *q=Newnode; -Q->val=x; -Q->lch=q->rch=NULL; -         returnQ; +     } -     Else{ +         if(X < p->val) AP->lch=intsert (p->lch,x); at         Else -P->rch=intsert (p->rch,x); -         returnp; -     } - } -  in //Find value x - BOOLFind (Node *p,intx) to { +     if(P==null)return false; -     Else if(x = = P->val)return true; the     Else if(x < P->val)returnFind (p->lch,x); *     Else returnFind (p->rch,x); $ }Panax Notoginseng  - //Delete value x theNode *remove (node *p,intx) { +     if(P==null)returnNULL; A     Else if(x < P->val) P->lch=remove (p->lch,x); the     Else if(x > P->val) p->rch=remove (p->rch,x); +     Else if(p->lch==NULL) { -Node *q=p->ch; $ delete p; $         returnQ; -     } -     Else if(p->lch->rch==NULL) { theNode *q=p->LCH; -Q->rch=p->rch;Wuyi delete p; the         returnQ; -     } Wu     Else{ -Node *Q; About          for(q=p->lch;q->rch->rch!=null;q=q->rch); $Node *r=q->rch; -Q->rch=r->LCH; -R->lch=p->LCH; -R->rch=p->rch; A delete p; +         returnR; the     } -     returnp; $}

Implementation of binary search tree

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