C++ list——push_back()与insert()

push_back()是把插入元素直接放入链表结尾，不多表述

insert()是把元素插入指定位置

摘自MSDN,IDE VS2012

Parameters

Parameter	Description
_Where	The position in the target list where the first element is inserted.
_Val	The value of the element being inserted into the list.
_Count	The number of elements being inserted into the list.
_First	The position of the first element in the range of elements in the argument list to be copied.
_Last	The position of the first element beyond the range of elements in the argument list to be copied.

Return Value

The first two insert functions return an iterator that points to the position where the new element was inserted into the list.

示例代码：

// list_class_insert.cpp
// compile with: /EHsc
#include 
#include 
#include 

int main( ) 
{
   using namespace std;
   list  c1, c2;
   list ::iterator Iter;
   
   c1.push_back( 10 );
   c1.push_back( 20 );
   c1.push_back( 30 );
   c2.push_back( 40 );
   c2.push_back( 50 );
   c2.push_back( 60 );

   cout << "c1 =";
   for ( Iter = c1.begin( ); Iter != c1.end( ); Iter++ )
      cout << " " << *Iter;
   cout << endl;

   Iter = c1.begin( );
   Iter++;
   c1.insert( Iter, 100 );
   cout << "c1 =";
   for ( Iter = c1.begin( ); Iter != c1.end( ); Iter++ )
      cout << " " << *Iter;
   cout << endl;

   Iter = c1.begin( );
   Iter++;
   Iter++;
   c1.insert( Iter, 2, 200 );

   cout << "c1 =";
   for ( Iter = c1.begin( ); Iter != c1.end( ); Iter++ )
      cout << " " << *Iter;
   cout << endl;

   c1.insert( ++c1.begin( ), c2.begin( ),--c2.end( ) );

   cout << "c1 =";
   for ( Iter = c1.begin( ); Iter != c1.end( ); Iter++ )
      cout << " " << *Iter;
   cout << endl;

// initialize a list of strings by moving
   list < string > c2;
   string str("a");

   c2.insert( c2.begin(), move( str ) );
   cout << "Moved first element: " << c2.front( ) << endl;
}

Output

c1 = 10 20 30
c1 = 10 100 20 30
c1 = 10 100 200 200 20 30
c1 = 10 40 50 100 200 200 20 30
Moved first element: a