删除vector中指定的元素

删除vector中指定的元素

vector<int> arr;
arr.push_back(6);
arr.push_back(8);
arr.push_back(3);
arr.push_back(8);
//删除数据内容为8的元素
for(vector<int>::iterator it=arr.begin(); it!=arr.end(); )
{
if(* it == 8)
{
it = arr.erase(it);
//注意一样写把erase的返回值赋给it!
}
else
{
++it;
}
}
cout << "After remove 8:\n";
for(vector<int>::iterator it = arr.begin(); it < arr.end(); ++it)
{
cout << * it << " ";
}