Arrays Introduction | Hacker Rank C++ first arrays solution

Problem Statement :

An array is a series of elements of the same type placed in contiguous memory locations that can be individually referenced by adding an index to a unique identifier.

For arrays of a known size, 10 in this case, use the following declaration:

int arr[10]; //Declares an array named arr of size 10, i.e, you can 

store 10 integers.

Note Unlike C, C++ allows dynamic allocation of arrays at runtime without special calls like malloc(). If

n = 10 , int arr[n] will create an array with space for 10 integers.

Accessing elements of an array:

 Indexing in arrays starts from 0.So the first element is stored at 

arr[0],the second element at arr[1] and so on through arr[9].

You will be given an array of N integers and you have to print the integers in the reverse order.

Input Format

The first line of the input contains N , where N  is the number of integers.The next line contains N space-separated integers.

Constraints

  1 <= N <= 1000

  1 <= A[i] <=1000

Output Format

Print the N integers of the array in the reverse order, space-separated on a single line.

Solution:

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
   
    int n;
    cin >> n;
    int arr[n];
    for (int i = 0; i < n; i++)
        cin >> arr[i];
    for (int i = n - 1; i >= 0; i--)
        cout << arr[i] << ' ';
    return 0;
}