C语言顺序表的实现代码

#ifndef __SEQLIST_H__#define __SEQLIST_H__#include<cstdio>#include<malloc.h>#include<assert.h>#define SEQLIST_INIT_SIZE 8#define INC_SIZE 3 //空间增量的大小typedef int ElemType;typedef struct Seqlist { ElemType *base; int capacity; //顺序表容量 int size; //表的大小}Seqlist;bool Inc(Seqlist *list);//增加顺序表的容量void InitSeqlist(Seqlist *list); //初始化顺序表void push_back(Seqlist *list, ElemType x); //在顺序表的末尾插入元素void push_front(Seqlist *list, ElemType x); //在顺序表的头部插入元素void show_list(Seqlist *list); //显示顺序表中的元素void pop_back(Seqlist *list); //删除顺序表最后一个元素void pop_front(Seqlist *list); //删除顺序表第一个元素void insert_pos(Seqlist *list, int pos, ElemType x);//在顺序表的选定位置上插入数据int find(Seqlist *list, ElemType key); //在顺序表中查找元素key的下标int length(Seqlist *list);//求顺序表的长度void delete_pos(Seqlist *list, int pos); //删除顺序表中特定位置的数据元素void delete_val(Seqlist *list, int key);//删除顺序表中值为key的数据元素void sort(Seqlist *list);//冒泡排序void reverse(Seqlist *list);//逆置顺序列表void clear(Seqlist *list);//清除顺序表中的所有元素void destroy(Seqlist *list);//摧毁顺序表void merge(Seqlist *lt, Seqlist *la, Seqlist *lb);//合并两个顺序列表#endif //__SEQLIST_H__ 

#include"seqlist.h"bool Inc(Seqlist *list) { ElemType *newbase = (ElemType*)realloc(list, sizeof(ElemType)*(list->capacity + INC_SIZE)); //重新分配内存空间 if (newbase == NULL) {  printf("内存空间已满，无法再分配内存空间！/n");  return false; } list->base = newbase; list->capacity += INC_SIZE; return true;}void InitSeqlist(Seqlist *list) { list->base = (ElemType*)malloc(sizeof(ElemType)*SEQLIST_INIT_SIZE); assert(list->base != NULL); list->capacity = SEQLIST_INIT_SIZE; list->size = 0;}void push_back(Seqlist *list, ElemType x) { if (list->size >= list->capacity && !Inc(list)) { //Inc(list)用来判断增加顺序表容量是否成功,只有在失败的情况下才会进入if语句中  printf("顺序表容量已满，无法再在表尾继续插入新元素！/n");  return; } list->base[list->size] = x; list->size++;}void push_front(Seqlist *list, ElemType x) { if (list->size >= list->capacity && !Inc(list)) {  printf("顺序表容量已满，无法再在表头插入新元素！/n");  return; } for (int i = list->size;i > 0;i--) {  list->base[i] = list->base[i - 1]; } list->base[0] = x; list->size++;}void show_list(Seqlist *list) { for (int i = 0;i < list->size;i++) {  printf("%d ", list->base[i]); } printf("/n");}void pop_back(Seqlist *list) { if (list->size == 0) {  printf("顺序表已空，无法再在表尾删除元素！/n");  return; } list->size--;}void pop_front(Seqlist *list) { if (list->size == 0) {  printf("顺序表已空，无法再在表头删除元素！/n");  return; } for (int i = 0;i < list->size - 1;i++) {  list->base[i] = list->base[i + 1]; } list->size--;}void insert_pos(Seqlist *list, int pos, ElemType x) { if (pos<0 || pos>list->size) {  printf("插入位置不合法，无法插入元素！/n");  return; } if (list->size >= list->capacity && !Inc(list)) {  printf("顺序表容量已满，无法在插入新的元素！/n");  return; } for (int i = list->size;i > pos;i--) {  list->base[i] = list->base[i - 1]; } list->base[pos] = x; list->size++;}int find(Seqlist *list, ElemType key) { for (int i = 0;i < list->size;i++) {  if (list->base[i] == key)   return i; } return -1;}int length(Seqlist *list) { return list->size;}void delete_pos(Seqlist *list, int pos) { if (pos < 0 || pos >= list->size) {  printf("删除位置不合法，无法删除元素！/n");  return; } for (int i = pos;i < list->size - 1;i++) {  list->base[i] = list->base[i + 1]; } list->size--;}void delete_val(Seqlist *list, int key) { int pos = find(list, key); if (pos == -1) {  printf("顺序表中没有这个元素！/n");  return; } delete_pos(list, pos);}void sort(Seqlist *list) { for (int i = 0;i < list->size - 1;i++) {//排序的趟数（例如5个数据需要比较4趟）  for (int j = 0;j < list->size - 1 - i;j++) {//每一趟比较中的比较次数（例如5个数据在第0趟需要比较4次）   if (list->base[j] > list->base[j + 1]) {    ElemType temp = list->base[j];    list->base[j] = list->base[j + 1];    list->base[j + 1] = temp;   }  } }}void reverse(Seqlist *list) { if (list->size == 0 || list->size == 1) return; int low = 0, high = list->size - 1; while (low < high) {  ElemType temp = list->base[low];  list->base[low] = list->base[high];  list->base[high] = temp;  low++;  high--; }}void clear(Seqlist *list) { list->size = 0;}void destroy(Seqlist *list) { free(list->base); list->base = NULL; list->capacity = 0; list->size = 0;}void merge(Seqlist *lt, Seqlist *la, Seqlist *lb) { lt->capacity = la->size + lb->size; lt->base = (ElemType*)malloc(sizeof(ElemType)*lt->capacity); assert(lt->base != NULL); int ia = 0, ib = 0, ic = 0; while (ia < la->size&&ib < lb->size) {  if (la->base[ia] < lb->base[ib]) {   lt->base[ic++] = la->base[ia++];  }  else {   lt->base[ic++] = lb->base[ib++];  } } while (ia < la->size) {  lt->base[ic++] = la->base[ia++]; } while (ib < lb->size) {  lt->base[ic++] = lb->base[ib++]; } lt->size = la->size + lb->size; show_list(lt);}

#include"seqlist.h"void main() { Seqlist list; InitSeqlist(&list); ElemType item; int pos; int select = 1; while (select) {  printf("*******************************************/n");  printf("*[1] push_back  [2] push_front */n");  printf("*[3] show_list  [4] pop_back  */n");  printf("*[5] pop_front  [6] insert_pos */n");  printf("*[7] find    [8] length  */n");  printf("*[9] delete_pos  [10] delete_value */n");  printf("*[11] sort    [12] reverse  */n");  printf("*[13] clear   [14] merge   */n");  printf("*[0] quit_system       */n");  printf("*******************************************/n");  printf("请选择：>>");  scanf("%d", &select);  if (select == 0) break;  switch (select) {  case 1:   printf("请输入要插入的数据（-1结束）:>");   while (scanf("%d", &item), item != -1) {//先输入item的值，只要item不等于-1就接着循环    push_back(&list, item);   }   break;  case 2:   printf("请输入要插入的数据（-1结束）:>");   while (scanf("%d", &item), item != -1) {    push_front(&list, item);   }   break;  case 3:   show_list(&list);   break;  case 4:   pop_back(&list);   break;  case 5:   pop_front(&list);   break;  case 6:   printf("请输入要插入的数据:>");   scanf("%d", &item);   printf("请输入要插入的位置:>");   scanf("%d", &pos);   insert_pos(&list, pos, item);   break;  case 7:   printf("请输入要查找的数据:>");   scanf("%d", &item);   pos = find(&list, item);   if (pos == -1)    printf("查找的数据元素不在顺序表中！/n");   else    printf("查找的数据元素在顺序表中的下标位置为%d/n", pos);   break;  case 8:   printf("顺序表的长度为%d/n", length(&list));   break;  case 9:   printf("请输入要删除数据在顺序表中的下标位置:>");   scanf("%d", &pos);   delete_pos(&list, pos);   break;  case 10:   printf("请输入要删除数据的值:>");   scanf("%d", &item);   delete_val(&list, item);   break;  case 11:   sort(&list);   break;  case 12:   reverse(&list);   break;  case 13:   clear(&list);   break;  case 14:   Seqlist mylist, yourlist;   ElemType item1, item2;   InitSeqlist(&mylist);   InitSeqlist(&yourlist);   printf("请输入顺序表1中的元素值（-1结束）:>");   while (scanf("%d", &item1), item1 != -1) {    push_back(&mylist, item1);   }   printf("请输入顺序表2中的元素值（-1结束）:>");   while (scanf("%d", &item2), item2 != -1) {    push_back(&yourlist, item2);   }   merge(&list, &mylist, &yourlist);   destroy(&mylist);   destroy(&yourlist);   break;  default:   printf("输入的选择错误！请重新输入！/n");   break;  } } destroy(&list);}