#include "head.h"
#include "iostream.h"

#define LIST_INIT_SIZE 100

template <class ElemType>
class SqList
{
  private:
   ElemType *elem;
   int length;
      int listsize;
  public:
   SqList(int max=LIST_INIT_SIZE);
   ~SqList(){delete[] elem;}
      void ClearList();
      Status input(int n);
      Status output();
      Status ListEmpty();
      int    ListLength();
      ElemType GetElem(int i);
      Status NextElem(ElemType i,ElemType &next_e);
      Status ListInsert(int i,ElemType e);
      Status ListDelete(int i,ElemType &e);
   Status inver();// 逆置
      //Status MergeList(SqList La,SqList Lb);
};
template <class ElemType> SqList<ElemType>::SqList(int max)
{
  listsize=max;
  length=0;
  elem=new ElemType[listsize];
};
template <class ElemType> void SqList<ElemType>::ClearList()
{
  delete[] elem;
  elem=new ElemType[listsize];
  length=0;
};
template <class ElemType> Status SqList<ElemType>::input(int n)
{
  if(n<=0) return ERROR;
  for(int i=0;i<n;i++)
  {
    cout<<"输入第"<<i+1<<"个数:";
 cin>>elem[i];
  }
  length=n;
  return OK;
};
template <class ElemType> Status SqList<ElemType>::output()
{
  if(length==0) return ERROR;
  else
  {
    for(int i=0;i<length;i++)
 {
   cout<<elem[i]<<"->";
 }
 cout<<"NULL"<<endl;
  }
  return OK;
};
template <class ElemType> Status SqList<ElemType>::ListEmpty()
{
  if(length==0) return TRUE;
   else return FALSE;
};
template <class ElemType> int SqList<ElemType>::ListLength()
{
  return length;
};
template <class ElemType> ElemType SqList<ElemType>::GetElem(int n)
{
 ElemType e;
  if(length==0) return ERROR;
  if(n<1||n>ListLength()) return OVERFLOW;
  e=elem[n-1];
  return e;
};
template <class ElemType> Status SqList<ElemType>::NextElem(ElemType loc_e,ElemType &next_e)
{
  if(length==0) return ERROR;
  for(int i=1;loc_e!=elem[i-1];i++);
  if(i==length) return OVERFLOW;
  next_e=elem[i];
  return OK;
};
template <class ElemType> Status SqList<ElemType>::ListInsert(int i,ElemType e)
{
  if(i<1||i>length)  return ERROR;
  if(listsize==length) return OVERFLOW;
  for(int n=length-1;n>=i-1;n--)
   elem[n+1]=elem[n];
  elem[i-1]=e;
  length++;
  return OK;
};
template <class ElemType> Status SqList<ElemType>::ListDelete(int i,ElemType &e)
{
  if(i<1||i>length)  return ERROR;
  e=elem[i-1];
  for(int n=i-1;n<length-1;n++)
   elem[n]=elem[n+1];
  length--;
  return OK;
};
template <class ElemType> Status SqList<ElemType>::inver()
{
  int i,m,n;
  ElemType temp;
  n=length;
  m=n/2;
  for(i=0;i<m;i++)
  {
    temp=elem[i];elem[i]=elem[n-i-1];elem[n-i-1]=temp;
  }
  return OK;
};