danh sach lien ket day so nguyen

by thaihuuvt Sat Dec 08, 2007 6:53 pm

Code:: #include<stdio.h> #include<conio.h> #include<dos.h> typedef struct Node { int info; Node * next; }; //-------------------------------------- void Khoi_tao(Node *&h, Node *&t) { h = t= NULL; } //-------------------------------------- void Them_dau(Node *&h, Node *&t, int x) { Node *p = new Node; p -> info = x; p -> next = h; if (h == NULL) t = p; h = p; } //-------------------------------------- void Them_cuoi(Node *&h, Node *&t, int x) { Node *p = new Node; p -> info = x; p -> next = NULL; if (!h) h = p; else t -> next = p; t = p; } //--------------------------------------- void Xuat(Node *h) { for(Node *p = h; p; p = p -> next) if (p->next) printf("%d->", p->info); else printf("%d", p->info); } //--------------------------------------- void Them_sau_q(Node *q, Node *&t,int x) { Node *p = new Node; p -> info = x; p -> next = q -> next; q -> next = p; if (q == t) t = p; } //--------------------------------------- int Xoa_dau(Node *&h) { if(!h) return 0; Node *p=new Node; p->info=h->info; p->next=h->next; h=h->next; delete p; return 1; } //--------------------------------------- int Xoa_cuoi(Node *&t,Node *&h) { if(!h)return 0; Node *lui=new Node; for(Node *p=h;p;p=p->next) if(p->next!=NULL) lui=p; lui->next=NULL; t=lui; delete p,lui; return 1; } //---------------------------------------- int Xoa_q(Node *&q,Node *&h) { if(!h)return 0; Node *toi=new Node; for(Node *p=h;p;p=p->next) { toi=p->next; if(toi==q) p->next=toi->next; } delete p,toi; return 1; } //--------------------------------------- int dem_pt(Node *h) { int dem=0; for(Node *p=h;p;p=p->next) dem++; return (dem); } //--------------------------------------- void main() { Node *h, *t; clrscr(); Khoi_tao(h, t); int chon,x,dung=0;int dem; do{ printf("\n0:thoat \n1:Them dau \n2:Them cuoi \n3:Them giua \n4:Xoa dau \n5:Xoa cuoi \n6:Xoa giua \n7:Xem danh sach"); scanf("%d",&chon); switch(chon) { case 0: dung=1; break; case 1: do{ printf("\nnhap vao x: "); scanf("%d",&x); if(x) Them_dau(h,t,x); }while(x); break; case 2: do{ printf("\nnhap vao x: "); scanf("%d",&x); if(x) Them_cuoi(h,t,x); }while(x); break; case 3: int q=0,x; //int q,x;printf("\nnhap q: ");scanf("%d",&q); printf("\nnahp x:");scanf("%d",&x); dem=dem_pt(h); for(Node*i=h;i;i=i->next) { q++; if(q==dem/2) //if(i->info==q) Them_sau_q(i,t,x); } break; case 4: int xoa=Xoa_dau(h); if(xoa)printf("\nxoa thanh cong"); else printf("\ndanh sach rong ko xoa dc"); break; case 5: int Xoa=Xoa_cuoi(t,h); if(Xoa==1)printf("Phan tu cuoi da duoc xoa."); else printf("danh sach rong,ko xoa duoc."); break; case 6: int d=0,dem=dem_pt(h),xg; for(Node *j=h;j;j=j->next) { d++; if(d==dem/2+1) xg=Xoa_q(j,h); } if(xg==1)printf("Xoa thanh cong"); else ("Danh sach rong ko xoa duoc"); break; case 7: printf("\n:Danh sach lien ket vua nhap: "); Xuat(h); break; } }while(dung!=1); }