第三周 项目2-建设“顺序表”算法库
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- #ifndef LIST_H_INCLUDED
- #define LIST_H_INCLUDED
-
- #define MaxSize 50
- typedef int ElemType;<pre name="code" class="cpp">#include "list.h"
- #include <stdio.h>
- #include <malloc.h>
- void CreateList(SqList *&L, ElemType a[], int n)
- {
- int i;
- L=(SqList *)malloc(sizeof(SqList));
- for (i=0; i<n; i++)
- L->data[i]=a[i];
- L->length=n;
- }
-
- //初始化线性表InitList(L)
- void InitList(SqList *&L) //引用型指针
- {
- L=(SqList *)malloc(sizeof(SqList));
- //分配存放线性表的空间
- L->length=0;
- }
-
- //销毁线性表DestroyList(L)
- void DestroyList(SqList *&L)
- {
- free(L);
- }
-
- //判定是否为空表ListEmpty(L)
- bool ListEmpty(SqList *L)
- {
- return(L->length==0);
- }
-
- //求线性表的长度ListLength(L)
- int ListLength(SqList *L)
- {
- return(L->length);
- }
-
- //输出线性表DispList(L)
- void DispList(SqList *L)
- {
- int i;
- if (ListEmpty(L)) return;
- for (i=0; i<L->length; i++)
- printf("%d ",L->data[i]);
- printf("\n");
- }
-
- //求某个数据元素值GetElem(L,i,e)
- bool GetElem(SqList *L,int i,ElemType &e)
- {
- if (i<1 || i>L->length) return false;
- e=L->data[i-1];
- return true;
- }
-
- //按元素值查找LocateElem(L,e)
- int LocateElem(SqList *L, ElemType e)
- {
- int i=0;
- while (i<L->length && L->data[i]!=e) i++;
- if (i>=L->length) return 0;
- else return i+1;
- }
-
- //插入数据元素ListInsert(L,i,e)
- bool ListInsert(SqList *&L,int i,ElemType e)
- {
- int j;
- if (i<1 || i>L->length+1)
- return false; //参数错误时返回false
- i--; //将顺序表逻辑序号转化为物理序号
- for (j=L->length; j>i; j--) //将data[i..n]元素后移一个位置
- L->data[j]=L->data[j-1];
- L->data[i]=e; //插入元素e
- L->length++; //顺序表长度增1
- return true; //成功插入返回true
- }
-
- //删除数据元素ListDelete(L,i,e)
- bool ListDelete(SqList *&L,int i,ElemType &e)
- {
- int j;
- if (i<1 || i>L->length) //参数错误时返回false
- return false;
- i--; //将顺序表逻辑序号转化为物理序号
- e=L->data[i];
- for (j=i; j<L->length-1; j++) //将data[i..n-1]元素前移
- L->data[j]=L->data[j+1];
- L->length--; //顺序表长度减1
- return true; //成功删除返回true
- }
-
- int main()
- {
- SqList *sq;
- ElemType x[6]= {5,8,7,2,4,9};
- CreateList(sq, x, 6);
- DispList(sq);
- return 0;
- }
- </pre><br>
- typedef struct{ ElemType data[MaxSize]; int length;} SqList;void CreateList(SqList *&L, ElemType a[], int n);//用数组创建线性表void InitList(SqList *&L);//初始化线性表InitList(L)void DestroyList(SqList *&L);//销毁线性表DestroyList(L)bool ListEmpty(SqList *L);//判定是否为空表ListEmpty(L)int
- ListLength(SqList *L);//求线性表的长度ListLength(L)void DispList(SqList *L);//输出线性表DispList(L)bool GetElem(SqList *L,int i,ElemType &e);//求某个数据元素值GetElem(L,i,e)int LocateElem(SqList *L, ElemType e);//按元素值查找LocateElem(L,e)bool ListInsert(SqList *&L,int i,ElemType
- e);//插入数据元素ListInsert(L,i,e)bool ListDelete(SqList *&L,int i,ElemType &e);//删除数据元素ListDelete(L,i,e)#endif // LIST_H_INCLUDED#endif
- <pre></pre>
- <br>