C++ vector容器刪除操作

1.vector::pop_back()

刪除vector的最后一個元素，vector的大小減一，刪了的元素被銷毀。

 

2.vector::erase()

iterator erase (iterator position);
iterator erase (iterator first, iterator last);//這個刪除的范圍是左閉右開

//C++11要求形參是const迭代器
iterator erase (const_iterator position);
iterator erase (const_iterator first, const_iterator last);//這個刪除的范圍是左閉右開

// example
// erasing from vector
#include <iostream>
#include <vector>

int main ()
{
  std::vector<int> myvector;

  // set some values (from 1 to 10)
  for (int i=1; i<=10; i++) myvector.push_back(i);

  // erase the 6th element
  myvector.erase (myvector.begin()+5);

  // erase the first 3 elements:
  myvector.erase (myvector.begin(),myvector.begin()+3);

  std::cout << "myvector contains:";
  for (unsigned i=0; i<myvector.size(); ++i)
    std::cout << ' ' << myvector[i];
  std::cout << '\n';

  return 0;
}