C++ list的实例详解

 C++ list的实例详解

Source:

#include <iostream>  
#include <list>  
#include <numeric>  
#include <algorithm>   
using namespace std;   
  
typedef list<int> LISTINT;  //创建一个list容器的实例LISTINT 
typedef list<int> LISTCHAR; //创建一个list容器的实例LISTCHAR 
int main(void) {    
  LISTINT listOne;  //用LISTINT创建一个名为listOne的list对象   
  LISTINT::iterator i;  //声明i为迭代器     
  listOne.push_front (2); //从前面向listOne容器中添加数据 
  listOne.push_front (1);   
  listOne.push_back (3); //从后面向listOne容器中添加数据 
  listOne.push_back (4);    
    
  cout<<"listOne.begin()--- listOne.end():"<<endl;  //从前向后显示listOne中的数据 
  for (i = listOne.begin(); i != listOne.end(); ++i)     
    cout << *i << " ";   
  cout << endl;      
      
  LISTINT::reverse_iterator ir;  //从后向后显示listOne中的数据 
  cout<<"listOne.rbegin()---listOne.rend():"<<endl;  
  for (ir =listOne.rbegin(); ir!=listOne.rend();ir++)      
    cout << *ir << " ";       
  cout << endl;      
   
  int result = accumulate(listOne.begin(), listOne.end(),0); //使用STL的accumulate(累加)算法    
  cout<<"Sum="<<result<<endl;   
  
  LISTCHAR listTwo;  //用LISTCHAR创建一个名为listOne的list对象  
  LISTCHAR::iterator j;   //声明j为迭代器    
  listTwo.push_front ('A'); //从前面向listTwo容器中添加数据   
  listTwo.push_front ('B');    
  listTwo.push_back ('x');  //从后面向listTwo容器中添加数据  
  listTwo.push_back ('y');     
  cout<<"listTwo.begin()---listTwo.end():"<<endl; //从前向后显示listTwo中的数据 
  for (j = listTwo.begin(); j != listTwo.end(); ++j)   
    cout << char(*j) << " ";   
  cout << endl;    
  //使用STL的max_element算法求listTwo中的最大元素并显示   
  j=max_element(listTwo.begin(),listTwo.end());    
  cout << "The maximum element in listTwo is: "<<char(*j)<<endl; 
  return 0; 
}  
 
 

Result:

 
[work@db-testing-com06-vm3.db01.baidu.com c++]$ g++ -o list list.cpp 
[work@db-testing-com06-vm3.db01.baidu.com c++]$ ./list 
listOne.begin()--- listOne.end():
1 2 3 4 
listOne.rbegin()---listOne.rend():
4 3 2 1 
Sum=10
listTwo.begin()---listTwo.end():
B A x y 
The maximum element in listTwo is: y

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