顺序存储的线性表
[cpp]/*
* 顺序存储的线性表
*/
#include <stdio.h>
#define OK 1
#define ERR 0
#define LIST_INIT_SIZE 100
#define LIST_INCREMENT 10
#define ElemType char
typedef struct {
ElemType *elem;
int length;//元素个数
int listSize;//总容量
} SqList;
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int InitList(SqList *aList)
{
aList->elem = (ElemType *)malloc(sizeof(ElemType)*LIST_INIT_SIZE);
if(NULL == aList->elem)return ERR;
aList->listSize = LIST_INIT_SIZE;
aList->length = 0;
return OK;
}
int ListInsert(SqList *aList,ElemType e,int index)
{
int i;
if( index<0 || index>aList->length ){
printf("Error : Insert %c to wrong position %d\n",e,index);
return ERR;//中间不允许存在空位
}
if( aList->listSize <= aList->length )
{
aList->elem = (ElemType *)realloc(aList->elem,
sizeof(ElemType)*aList->listSize+LIST_INCREMENT);
if(NULL == aList->elem) return ERR;
aList->listSize += LIST_INCREMENT;
}
printf("Insert %c to position %d\n",e,index );
i = aList->length;
while(i>index)
{
aList->elem[i] = aList->elem[i-1];
i--;
}
aList->elem[index] = e;
aList->length++;
return OK;
}
int ListDelete(SqList *aList,ElemType *e,int index)
{
int i = index;
if(i<0 || i>=aList->length)return ERR;
*e = aList->elem[index];
i = index;
while(i<aList->length-1)
{
aList->elem[i] = aList->elem[i+1];
i++;
}
aList->length--;
return OK;
}
int ListTraverse(SqList aList)
{
int i=0;
while(i < aList.length){
printf("%c\t",aList.elem[i]);
i++;
}
printf("\n");
return OK;
}
int main(int argc, char *argv[])
{
SqList aList ;
char element;
int position;
InitList( &aList );
while(1){
printf("Please input element and position to insert in (input ; to quit) :\n");
scanf("%1s,%d",&element,&position);
if(';' == element) break;
ListInsert(&aList,element,position);
}
ListDelete(&aList,&element,0);
ListTraverse(aList);
printf("length :%d . \n",aList.length);
return OK;
}
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