Question

How to sort part of a vector in ascending order with C++

Answer 1

#include <iostream>
#include <algorithm> 
#include <vector>
 
int main()
{
    std::vector<int> v = { 12, 3, 5, 7, 9, 2, 6, 8, 99, 1, 0 };
     
    int first_4 = 4;
     
    partial_sort(v.begin(), v.begin() + first_4, v.end());
  
    for(auto const& n : v)
        std::cout << n << " ";
 
    return 0;
}
 
 
 
/*
run:
        
0 1 2 3 12 9 7 8 99 6 5 
        
*/

 

 

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