How to sort an Array in descending order using STL in C++?

Given an array arr[], sort this array in descending order using STL in C++.

Example:

Input: arr[] = {1, 45, 54, 71, 76, 12}
Output: {76, 71, 54, 45, 12, 1}

Input: arr[] = {1, 7, 5, 4, 6, 12}
Output: {12, 7, 6, 5, 4, 1}

Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Approach: Sorting can be done with the help of sort() function provided in STL.

Syntax:

sort(arr, arr + n, greater<T>());

// C++ program to sort Array 
// in descending order 
// using sort() in STL 
  
#include <bits/stdc++.h> 
using namespace std; 
  
int main() 
{ 
    // Get the array 
    int arr[] = { 1, 45, 54, 71, 76, 12 }; 
  
    // Compute the sizes 
    int n = sizeof(arr) / sizeof(arr[0]); 
  
    // Print the array 
    cout << "Array: "; 
    for (int i = 0; i < n; i++) 
        cout << arr[i] << " "; 
  
    // Sort the array in descending order 
    sort(arr, arr + n, greater<int>()); 
  
    // Print the sorted array 
    cout << "\nDescending Sorted Array:\n"; 
    for (int i = 0; i < n; i++) 
        cout << arr[i] << " "; 
    return 0; 
} 

Output:

Array: 1 45 54 71 76 12 
Descending Sorted Array:
76 71 54 45 12 1

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