本課主題： 實驗二 循環(huán)鏈表實驗
教學(xué)目的： 掌握單向鏈表的實現(xiàn)方法
教學(xué)重點： 單向鏈表的存儲表示及操作
教學(xué)難點： 單向鏈表的操作實現(xiàn)
授課內(nèi)容：
一、單向鏈表的存儲表示
C源程序
#include<stdio.h>#include<malloc.h>#include<conio.h>#define ERROR 0#define OK 1#define EQUAL 1#define OVERFLOW -1#define LIST_INIT_SIZE 100#define LISTINCREMENT 10struct STU{ char name[20]; char stuno[10]; int age; int score;}stu[50];typedef struct STU ElemType;struct LNODE{ ElemType data; struct LNODE *next;};typedef struct LNODE LNode;typedef struct LNODE *LinkList;int init(LinkList *L){ *L=(LNode *)malloc(sizeof(LNode)); if(!L) exit(ERROR); (*L)->next=NULL; return OK;}/*init */int ListLength(LinkList L){ int j=0; while (L->next) { L=L->next; j++; } return j;}int GetElem(LinkList L,int i,ElemType *e){ LinkList p; int j; p=L->next;j=1; while(p&&j<i){ p=p->next;++j; } if(!p||j>1) return ERROR; *e=p->data; return OK;}int EqualList(ElemType *e1,ElemType *e2){ if (strcmp(e1->name,e2->name)==0) return 1; else return 0;}int Less_EqualList(ElemType *e1,ElemType *e2){ if (strcmp(e1->name,e2->name)<=0) return 1; else return 0;}int LocateElem(LinkList La,ElemType e,int type){ int i; LinkList p; p=La; switch (type) { case EQUAL: while(p->next) { p=p->next; if(EqualList(&p->data,&e)) return 1; } return 0; break; default: break; } return 0;}void MergeList(LinkList La,LinkList Lb,LinkList *Lc){ LinkList pa,pb,pc; pa=La->next;pb=Lb->next; *Lc=pc=La; while(pa && pb) { if(Less_EqualList(&pa->data,&pb->data)) { pc->next=pa;pc=pa;pa=pa->next; } else { pc->next=pb;pc=pb;pb=pb->next; } } pc->next=pa?pa:pb; free(Lb);}int printlist(LinkList L){ int i; LinkList p; p=L; printf("name stuno age score\n"); while(p->next) { p=p->next; printf("%-10s %s\t%d\t%d\n", p->data.name, p->data.stuno, p->data.age, p->data.score); } printf("\n");}int ListInsert(LinkList L,int i,ElemType e){ LinkList p,s; int j; p=L;j=0; while(p&&j<i-1) { p=p->next; ++j; } if(!p||j>i-1) return ERROR; s=(LinkList)malloc(sizeof(LNode)); s->data=e; s->next=p->next; p->next=s; return OK;}/*ListInsert Before i */main(){ struct STU e; LinkList La,Lb,Lc; clrscr(); printf("\n\n-------------------List Demo is running...----------------\n\n"); printf("First is InsertList function.\n"); init(&La); strcpy(e.name,"stu1"); strcpy(e.stuno,"100001"); e.age=80; e.score=1000; ListInsert(La,1,e); strcpy(e.name,"stu3"); strcpy(e.stuno,"100002"); e.age=80; e.score=1000; ListInsert(La,2,e); printlist(La); getch(); strcpy(e.name,"stu5"); strcpy(e.stuno,"100003"); e.age=80; e.score=1000; ListInsert(La,3,e); printlist(La); getch(); init(&Lb); strcpy(e.name,"stu2"); strcpy(e.stuno,"100001"); e.age=80; e.score=1000; ListInsert(Lb,1,e); strcpy(e.name,"stu4"); strcpy(e.stuno,"100002"); e.age=80; e.score=1000; ListInsert(Lb,2,e); strcpy(e.name,"stu6"); strcpy(e.stuno,"100001"); e.age=80; e.score=1000; ListInsert(Lb,3,e); printlist(Lb); getch(); MergeList(La,Lb,&Lc); printlist(Lc); getch(); printf("\n\n\n\n\n\nWelcome to visit http://zmofun.heha.net !\n\n\n\n\n\n\n");}
