线性表实现——数组实现

  1 #include <stdio.h>
  2
  3 #define MAZSIZE 20
  4 typedef int ElemType;
  5 typedef struct {
  6     ElemType data[MAZSIZE];
  7     int length;
  8 }ArrList;
  9
 10 #define OK 1
 11 #define ERROR 0
 12 #define true 1;
 13 #define false 0;
 14 typedef int Status;
 15
 16 Status InitList(ArrList *L)
 17 {
 18     L->length = 0;
 19     return OK;
 20 }
 21
 22 Status ListEmpty(ArrList L)
 23 {
 24     if(L.length == 0)
 25         return true;
 26
 27     return false;
 28 }
 29
 30 Status ClearList(ArrList *L)
 31 {
 32     L->length = 0;
 33
 34     return OK;
 35 }
 36
 37 Status GetElem(ArrList L , int i, ElemType *e)
 38 {
 39     if (i > L.length || i < 1 || L.length==0)
 40         return ERROR;
 41     *e = L.data[i-1];
 42
 43     return OK;
 44 }
 45
 46 Status LocateElem(ArrList L, ElemType e)
 47 {
 48     if (L.length == 0)
 49         return ERROR;
 50     int i;
 51     for (i = 0; i < L.length; i++)
 52     {
 53         if (L.data[i] == e)
 54             break;
 55     }
 56     if (i >= L.length)
 57         return ERROR;
 58     return i + 1;
 59 }
 60
 61 Status ListInsert(ArrList *L, int i, ElemType e)
 62 {
 63     if (L->length == MAZSIZE)
 64         return ERROR;
 65     if ((i<1) || (i> L->length+1))
 66         return ERROR;
 67     int j;
 68     if (i <= L->length)
 69     {
 70         for (j = L->length; j > i - 1; j--)
 71         {
 72             L->data[j] = L->data[j - 1];
 73         }
 74     }
 75     L->data[i-1] = e;
 76     L->length++;
 77     return OK;
 78 }
 79
 80 Status ListDelete(ArrList *L, int i, ElemType *e)
 81 {
 82     if (L->length == 0)
 83         return ERROR;
 84     if ((i<1) && (i>L->length))
 85         return ERROR;
 86     int j;
 87     *e = L->data[i - 1];
 88     if (i < L->length)
 89     {
 90         for (j = i - 1; j < L->length; j++)
 91         {
 92             L->data[j] = L->data[j + 1];
 93         }
 94     }
 95     L->length--;
 96     return OK;
 97 }
 98
 99 int ListLength(ArrList *L)
100 {
101     return L->length;
102 }
103
104 Status CreateList(ArrList *L)
105 {
106     int i;
107     for (i = 0; i<MAZSIZE; i++)
108     {
109         L->data[i] = i + 1;
110         L->length++;
111     }
112     return OK;
113 }
114 void TraverseList(const ArrList *L)
115 {
116     int i;
117     for (i = 0; i < L->length; i++)
118         printf(" %d ", L->data[i]);
119     printf("\n");    }