Arrays Introduction in C++ HackerRank Solution

 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]<=10000,where A[i] is the i^th integer in the array.

Output Format

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

Sample Input

4
1 4 3 2

Sample Output

2 3 4 1

Solution

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#define MAX 10000
using namespace std;
int main() 
{ 
    int a[MAX], N,i;
    cin>>N;
    for(i=1;i<=N;i++)
    {
        cin>>a[i];
    }
    for(i=0;i<N;i++)
    {
        cout<<a[N-i]<<" ";
    } 
    return 0;
}