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#ifndef SEQUENCE_H_
#define SEQUENCE_H_
#define MAXSIZE 100
#include<stdio.h>
#include<stdlib.h>
#include<stdbool.h>
typedef int ElemType;
typedef struct data {
ElemType * elem;
int length;
} Elem;
void InitList (Elem * L);
void DestroyList (Elem * L);
void ClearList (Elem * L);
void AddElem (Elem * L, ElemType e); // Add an element, length +1
bool ListEmpty (Elem * L);
ElemType ListLength (Elem * L);
ElemType GetElem (Elem * L, int i); // Get ith element
ElemType LocateElem (Elem * L, ElemType e); // return element e's position, if not found, return 0
ElemType PriorElem (Elem * L, ElemType e); // return precedent element of e
ElemType NextElem (Elem * L, ElemType e); // return element after e
bool ListInsert (Elem * L, ElemType e, int i); // insert Elem at i
bool ListDelete (Elem * L, int i); // delete ith element
void TraverseList (Elem * L); // traverse all list
char OperateMenu (void); // show Menu to user
#endif
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