Program to copy the contents of one array into another in the reverse order

Given an array, the task is to copy these array elements into another array in reverse array.
Examples:

Input: array: 1 2 3 4 5 
Output: 5 4 3 2 1 

Input: array: 10 20 30 40 50 
Output: 50 40 30 20 10  

Let len be the length of original array. We copy every element original_arr[i] to copy_arr[n-i-1] to get reverse in copy_arr[]. 

C++

// C program to copy the contents
// of one array into another
// in the reverse order

#include <stdio.h>

// Function to print the array
void printArray(int arr[], int len)
{
    int i;
    for (i = 0; i < len; i++) {
        printf("%d ", arr[i]);
    }
}

// Driver code
int main()
{
    int original_arr[] = {1, 2, 3, 4, 5};
    int len = sizeof(original_arr)/sizeof(original_arr[0]);

    int copied_arr[len], i, j;

    // Copy the elements of the array
    // in the copied_arr in Reverse Order
    for (i = 0; i < len; i++) {
        copied_arr[i] = original_arr[len - i - 1];
    }

    // Print the original_arr
    printf("\nOriginal array: ");
    printArray(original_arr, len);

    // Print the copied array
    printf("\nResultant array: ");
    printArray(copied_arr, len);

    return 0;
}

Java

// Java program to copy the contents
// of one array into another
// in the reverse order
class GFG {

// Function to print the array
static void printArray(int arr[], int len)
{
    int i;
    for (i = 0; i < len; i++)
    {
        System.out.printf("%d ", arr[i]);
    }
}

// Driver code
public static void main(String[] args)
{
    int original_arr[] = {1, 2, 3, 4, 5};
    int len = original_arr.length;
    int copied_arr[] = new int[len], i, j;

    // Copy the elements of the array
    // in the copied_arr in Reverse Order
    for (i = 0; i < len; i++)
    {
        copied_arr[i] = original_arr[len - i - 1];
    }

    // Print the original_arr
    System.out.printf("\nOriginal array: ");
    printArray(original_arr, len);

    // Print the copied array
    System.out.printf("\nResultant array: ");
    printArray(copied_arr, len);
    }
}

// This code is contributed by
// PrinciRaj1992

Python3

# Python3 program to copy the contents of one
# array into another in the reverse order
import math as mt

# Function to print the array
def printArray(arr, Len):

    for i in range(Len):
        print(arr[i], end = " ")

# Driver code
original_arr = [1, 2, 3, 4, 5]
Len = len(original_arr)

copied_arr = [0 for i in range(Len)]

# Copy the elements of the array
# in the copied_arr in Reverse Order
for i in range(Len):
    copied_arr[i] = original_arr[Len - i - 1]

# Print the original_arr
print("Original array: ", end = "")
printArray(original_arr, Len)

# Print the copied array
print("\nResultant array: ", end = "")
printArray(copied_arr, Len)

# This code is contributed by
# Mohit kumar 29

C#

// C# program to copy the contents
// of one array into another
// in the reverse order
using System;
class GFG
{

// Function to print the array
static void printArray(int []arr, int len)
{
    int i;
    for (i = 0; i < len; i++)
    {
        Console.Write(arr[i]);
    }
}

// Driver code
public static void Main()
{
    int []original_arr = {1, 2, 3, 4, 5};
    int len = original_arr.Length;
    int []copied_arr = new int[len];
    int i;

    // Copy the elements of the array
    // in the copied_arr in Reverse Order
    for (i = 0; i < len; i++)
    {
        copied_arr[i] = original_arr[len - i - 1];
    }

    // Print the original_arr
    Console.Write("\nOriginal array: ");
    printArray(original_arr, len);

    // Print the copied array
    Console.Write("\nResultant array: ");
    printArray(copied_arr, len);
    }
}

// This code is contributed by Rajput-Ji

PHP

<?php
// PHP program to copy the contents
// of one array into another
// in the reverse order

// Function to print the array
function printArray($arr, $len)
{
    for ($i = 0; $i < $len; $i++)
    {
        echo $arr[$i], " ";
    }
}

// Driver code
$original_arr = array(1, 2, 3, 4, 5);
$len = sizeof($original_arr);

$copied_arr = array();

// Copy the elements of the array
// in the copied_arr in Reverse Order
for ($i = 0; $i < $len; $i++)
{
    $copied_arr[$i] = $original_arr[$len - $i - 1];
}

// Print the original_arr
echo "Original array: ";
printArray($original_arr, $len);

// Print the copied array
echo "\nResultant array: ";
printArray($copied_arr, $len);

// This code is contributed by Ryuga
?>

Javascript

<script>

// JavaScript program to copy the contents
// of one array into another
// in the reverse order

// Function to print the array
function printArray(arr, len)
{
    var i;
    for (i = 0; i < len; i++) {
        document.write( arr[i] + " ");
    }
}

// Driver code
var original_arr = [1, 2, 3, 4, 5];
var len = original_arr.length;
var copied_arr = Array(len), i, j;

// Copy the elements of the array
// in the copied_arr in Reverse Order
for (i = 0; i < len; i++) {
    copied_arr[i] = original_arr[len - i - 1];
}
// Print the original_arr
document.write("Original array: ");
printArray(original_arr, len);

// Print the copied array
document.write("<br>Resultant array: ");
printArray(copied_arr, len);


</script>

Output:

Original array: 1 2 3 4 5 
Resultant array: 5 4 3 2 1

Time Complexity: O(len)

Auxiliary Space: O(len)