how to sort a vector

1sort(v.begin(), v.end()); 

1// C++ program to sort a vector in non-decreasing 
2// order. 
3#include <bits/stdc++.h> // Vector 
4#include <algorithm>  // Sort
5using namespace std; 
6  
7int main() 
8{ 
9// Initalizing the vector v with these values
10    vector<int> v{ 1, 5, 8, 9, 6, 7, 3, 4, 2, 0 }; 
11// Vector is sorted in ascending order   
12    sort(v.begin(), v.end()); 
13  
14    return 0; 
15} 

1sort(begin(v), end(v), [] (int a, int b) { return a > b; }); // decrease

1sort(a.begin(), a.end());

1vector<int> v;
2sort(v.begin(),v.end());