十六章第七题

#include<iostream>
using namespace std;
#include<vector>
#include<algorithm>
const int num = 51;
vector<int> lotto(const int num, int n = 0);
int main()
{
    
    
 vector<int> winner;
 winner = lotto(num, 6);
 for (auto i = winner.begin(); i != winner.end(); i++)
 {
    
    
  cout.width(4);
  cout << *i;
 }
 cout << endl;
 return 0;
}
vector<int> lotto(const int num, int n)
{
    
    
 vector<int> temp(num);
 for (int i = 0; i < num; i++)
  temp[i] = i + 1;
 random_shuffle(temp.begin(), temp.end());
 vector<int> show(n);
 for (int i = 0; i < n; i++)
  show[i] = temp[i];
 sort(show.begin(), show.end());
 return show;
}