【牛客带你学编程C++方向】项目练习第9期（截止6.15）

void delete_even(std::vector<int> &v) { if (v.size() == 0) return; auto it = v.begin(); while (it != v.end()) { if (!(*it & 1)) it = v.erase(it); else ++it; } }

#include <bits/stdc++.h> using namespace std; int main(void) { vector<int>v={1,2,3,4,5,6,7,8,9}; auto it=v.begin(); while (it!=v.end()) { if (*it%2==0)it=v.erase(it); else it++; } for(auto &x:v)cout<<x<<endl; return 0; }

#include<vector> using namespace std; void delete_even(vector<int> &v) {     if (v.empty())         return;     vector<int>::iterator ite = v.begin();     while (ite != v.end())     {         if (*ite%2==0)             ite = v.erase(ite);//erase函数删除指定位置元素后，返回指向下一个元素位置         else             ++ite;     } } 同上

void deleteOdd(vector<int> &v) { ​ v.erase(remove_if(v.begin(),v.end(),[](int x){ return !(x&1);}),v.end()); }