C语言顺序表的实现代码

 #ifndef __SEQLIST_H__ #define __SEQLIST_H__ #include #include #include #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 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 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 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 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 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 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 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 size&&ib size) { if (la->base[ia] base[ib]) { lt->base[ic++] = la->base[ia++]; } else { lt->base[ic++] = lb->base[ib++]; } } while (ia size) { lt->base[ic++] = la->base[ia++]; } while (ib 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); }