Arrays Introduction - Hackerrank Solution

 

Arrays Introduction:

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Objective

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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.

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Solution:

#include <cmath> #include <cstdio> #include <vector> #include <iostream> #include <algorithm> using namespace std; int main() { int n; int arr[1000]; cin >> n; for(int i=0;i<n;i++){ cin>>arr[i]; } for(int j=n-1;j>=0;j--){ cout<<arr[j]<<" "; } return 0; }

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Note:

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