#include <iostream> #include <vector> #include <list> #include <iterator> using namespace std; void Remove1(vector<int> &vec, int num) {  vector<int>::iterator iter;  for (iter=vec.begin(); iter!=vec.end(); ++iter)  {   if (*iter == num)   {    vec.erase(iter);   }  } } void Remove2(list<int> &lst, int num) {  list<int>::iterator iter;  for (iter=lst.begin(); iter!=lst.end(); ++iter)  {   if (*iter == num)   {    lst.erase(iter);   }  } } int main(void) {  int arr[] = {1, 3, 5, 5, 7, 9};  int num = sizeof(arr) / sizeof(arr[0]);  vector<int> vec(arr, arr+num);  list<int> lst(arr, arr+num);  Remove1(vec, 5);  copy(vec.begin(), vec.end(), ostream_iterator<int>(cout, " "));  //Remove2(lst, 5);  //copy(lst.begin(), lst.end(), ostream_iterator<int>(cout, " "));  return 0; }

void Remove1(std::vector<int> &vec, int num) {  std::vector<int>::iterator iter = vec.begin();  while (iter != vec.end())  {   if (*iter == num)   {    iter = vec.erase(iter);   }   else   {    ++iter;   }  } } // 删除某一类元素， 比如：偶数 void Remove3(std::set<int>& sets) {  std::set<int>::iterator iter = sets.begin();  while (iter != sets.end())  {   if (0 == (*iter)%2)   {    // 注意这里不能写成++iter，后面说明原因    sets.erase(iter++);   }   else   {    ++iter;   }  } } void Remove4(std::map<int, int>& maps) {  std::map<int, int>::iterator iter = maps.begin();  while (iter != maps.end())  {   if (0 == (iter->first)%2)   {    maps.erase(iter++);   }   else   {    ++iter;   }  } }