Array Copy: Data Backup

In this problem, you will create a program that reads array elements from standard input, duplicates the array as an independent copy using Arrays.copyOf(), and verifies that modifying the original does not affect the copy.

Learning Objective: Understand array copy methods and reference differences

Overview

Read array elements and a new value from standard input, then verify that modifying the original array does not affect the copied array.

Input Format

a b c
newVal

• Line 1: Three integers (space-separated) — initial values for the array
• Line 2: One integer — new value to assign to the first element of the original array

Specifications

• Create integer array original from input values
• Use Arrays.copyOf() method to copy the array
• Change the first element of the original array to newVal
• Output the first element of both original and copied arrays

Output Format

Original: [value after change]
Copy: [value at time of copy]

Sample I/O

Input:
10 20 30
99

Output:
Original: 99
Copy: 10

Hint: You need to import the java.util.Arrays class.