The C++ language implements an array instance of a linear table

  • 2020-04-02 03:04:22
  • OfStack

This article illustrates an array of linear tables in C++. Share with you for your reference. Specific analysis is as follows:

It is more readable, more reasonable and convenient to describe some data structures with the characteristics of constructors and destructors in C++. However, there is a problem that the compiler does not support separate compilation of templates, which is very uncomfortable


#include <iostream>
using namespace std;
template<class T>
class CArray
{
public:
 CArray(const int &iMax);
 CArray();
 ~CArray();
 void Create(const int &iMax);
 void Destroy();
 void Print();
 bool IsEmpty();
 bool IsFull();
 void Append(const T &data);
 int GetLength();
 int GetMax();
 bool Delete(const int &pos);
 bool Insert(const int &pos,const T &data);
 void operator+=(const T &data);
private:
 T *m_pArray;
 int m_len;
 int m_max;
 void Reset();
};
template<class T>
CArray<T>::CArray(const int &iMax)
{
 Create(iMax);
}
template<class T>
CArray<T>::~CArray()
{
 Destroy();
}
template<class T>
void CArray<T>::Create(const int &iMax)
{
 m_pArray = new T[iMax];
 m_max = iMax;
 m_len = 0;
 memset(m_pArray,0,sizeof(m_pArray));
}
template<class T>
void CArray<T>::Destroy()
{
 delete [] m_pArray;
}
template<class T>
void CArray<T>::Print()
{
 if(IsEmpty())
 { 
  cout<<" No data! "<<endl;
 }
 else
 {
  for(int ix =0 ; ix < m_len ; ++ix)
  {
   cout<<m_pArray[ix]<<",";
  }
  cout<<endl;
 }
}
template<class T>
bool CArray<T>::IsEmpty()
{
 if(0 == m_len)
 {
  return true;
 }
 else
 {
  return false;
 }
}
template<class T>
bool CArray<T>::IsFull()
{
 if(m_len == m_max)
 {
  Reset();
  return false;
 }
 else
 {
  return false;
 }
}
template<class T>
void CArray<T>::Append(const T &data)
{
 if(!IsFull())
 {
  ++m_len;
  m_pArray[m_len - 1] = data;
 }
}
template<class T>
int CArray<T>::GetLength()
{
 return m_len;
}
template<class T>
bool CArray<T>::Delete(const int &pos)
{
 if(pos > m_len || pos <= 0)
 {
  cout<<" Illegal position "<<endl;
  return false;
 }
 for(int ix = pos - 1 ; ix < m_len - 1 ; ++ ix)
 {
  m_pArray[ix] = m_pArray[ix + 1];
 }
 --m_len;
 return true;
}
template<class T>
void CArray<T>::operator+=(const T &data)
{
 this->Append(data);
}
template<class T>
bool CArray<T>::Insert(const int &pos,const T &data)
{
 if(IsFull())
 {
  return false;
 }
 else
 {
  for(int ix = m_len - 1 ; ix >= pos - 1 ; -- ix)
  {
   m_pArray[ix + 1] = m_pArray[ix];  
  }
  m_pArray[pos - 1] = data;
  ++m_len;
  return true;
 }
}
template<class T>
CArray<T>::CArray()
{
 Create(5);
}
template<class T>
void CArray<T>::Reset()
{
 T *pT = new T[m_max * 2];
 memset(pT,0,sizeof(pT));
 for(int ix = 0 ; ix < m_len ; ++ ix)
 {
  pT[ix] = m_pArray[ix];
 }
 delete [] m_pArray;
 
 m_pArray = pT;
 m_max = m_max * 2;
}
template<class T>
int CArray<T>::GetMax()
{
 return m_max;
}

Hope that the article described in the C++ programming to help you.


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