SeqList.h头文件
1 //线性表的顺序存储实现 2 3 #ifndef SEQLIST_H_INCLUDE 4 #define SEQLIST_H_INCLUDE 5 6 #include <stdio.h> 7 #include <stdlib.h> 8 #include <stdbool.h> 9 10 typedef int ElementType; 11 #define MAXSIZE 10 12 #define ERROR -1 13 14 typedef int Position; //这里的位置是数组的整型下标,从0开始 15 typedef struct LNode* PtrToNode; 16 struct LNode { 17 ElementType Data[MAXSIZE]; 18 Position Last; //数组中最后一个元素的下标 19 }; 20 typedef PtrToNode List; 21 22 //生成一个空的顺序链表 23 List MakeEmpty(); 24 25 //根据下标查找元素 26 ElementType FindElem(List L, int i); 27 28 //查找指定元素的下标 29 Position Find(List L, ElementType X); 30 31 //在第i个元素后插入X,即在下标为i - 1处插入X 32 bool Insert(List L, ElementType X, int i); 33 34 bool Delete(List L, int i); 35 36 void PrintList(List L); 37 38 #endif
SeqList.c
1 #include "SeqList.h" 2 3 List MakeEmpty() 4 { 5 List L; 6 L = (List)malloc(sizeof(struct LNode)); 7 if (!L) 8 { 9 printf("memory has run out!\n"); 10 return NULL; 11 } 12 L->Last = -1; 13 return L; //L是一个结点指针,返回一个指针的拷贝,而不是整个顺序表的拷贝 14 } 15 16 ElementType FindElem(List L, int i) 17 { 18 ElementType elem = -999; 19 if (i < 1 || i > L->Last + 1) 20 { 21 printf("The Search failed. Please enter the correct value of i!\n"); 22 return elem; 23 } 24 return L->Data[i]; 25 } 26 27 Position Find(List L, ElementType X) 28 { 29 Position i = 0; 30 while (i <= L->Last && L->Data[i] != X) 31 i++; 32 if (i > L->Last) return ERROR; //如果没找到, 返回错误信息 33 else 34 return i; 35 } 36 37 bool Insert(List L, ElementType X, int i) 38 { 39 Position j; 40 if (L->Last + 1 == MAXSIZE) 41 { 42 printf("List is full! Insertion failed.\n"); 43 return false; 44 } 45 if (i < 1 || i > L->Last + 2) //检查插入位置的合法性:是否在1 ~ n + 1.n 为当前元素个数,即Last + 1 46 { 47 printf("ordinal illegality!\n"); 48 return false; 49 } 50 for (j = L->Last; j >= i - 1; j--) 51 L->Data[j + 1] = L->Data[j]; 52 L->Data[i - 1] = X; 53 L->Last++; 54 return true; 55 56 } 57 58 bool Delete(List L, int i) 59 { 60 Position j; 61 if (i < 1 || i > L->Last + 1) 62 { 63 printf("The bit order is out of range!\n"); 64 return false; 65 } 66 for (j = i - 1; j < L->Last; j++) 67 L->Data[j] = L->Data[j + 1]; 68 L->Last--; //Last仍指向最后一个元素 69 return true; 70 } 71 72 void PrintList(List L) 73 { 74 int i; 75 if (L->Last == -1) 76 { 77 printf("List is empty! Printing failed!\n"); 78 return; 79 } 80 for (i = 0; i <= L->Last; i++) 81 printf("%d ", L->Data[i]); 82 printf("\n"); 83 }