replace() replace_copy()

int a[] = {1,2,3,3,4};
vector<int> v(a, a+5);
vector<int> v2;

//replace(v.begin(), v.end(), 3, 9);　　//把 v 中的3 替换为 9
replace_copy(v.begin(), v.end(), back_inserter(v2), 3, 9);  //把 v 中的3 替换为 9 赋值给v2 ，v的值不变
for (int i =0; i<v.size(); i++)
{
cout<<v[i]<<endl;
}

for (int i=0; i<v2.size(); i++)
{
cout<<v2[i]<<endl;
}

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int ia[] = { 1, 2, 3, 4, 100, 5, 100 };
vector< int > iVec( ia, ia+7 );

cout << "\n\tThe contents of iVec: ";

for ( vector<int>::iterator it = iVec.begin(); it != iVec.end(); ++it )
{
cout << *it << " ";
}

cout << endl;

list<int> iLst;
// copy iVec's member to iLst;
cout << "\n Using inserter: " << endl;

replace_copy( iVec.begin(), iVec.end(), inserter( iLst, iLst.begin() ), 100, 0 );
cout << "\tThe contents of iLst: ";
for ( list<int>::iterator it = iLst.begin(); it != iLst.end(); ++it )
{
cout << *it << " ";
}
cout << endl;

cout << "\n Using back_inserter: " << endl;
iLst.clear();
replace_copy( iVec.begin(), iVec.end(), back_inserter( iLst ), 100, 0 );
cout << "\tThe contents of iLst: ";

for ( list<int>::iterator it = iLst.begin(); it != iLst.end(); ++it )
{
cout << *it << " ";
}
cout << endl;

cout << "\n Using front_inserter: " << endl;
iLst.clear();
replace_copy( iVec.begin(), iVec.end(), front_inserter( iLst ), 100, 0 );
cout << "\tThe contents of iLst: ";
for ( list<int>::iterator it = iLst.begin(); it != iLst.end(); ++it )
{
cout << *it << " ";
}
cout<<endl;

replace(iLst.begin(), iLst.end(), 0 , 8);

for ( list<int>::iterator it = iLst.begin(); it != iLst.end(); ++it )
{
cout << *it << " ";
}

cout << endl;
system("pause");

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原文：http://wenwen.soso.com/z/q150702174.htm