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import java.util.Scanner; public class StringRearrangement { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.print("Enter a string: "); String userInput = scanner.nextLine(); String rearrangedString = rearrangeString(userInput); System.out.println("Rearranged string: " + rearrangedString); } public static String rearrangeString(String inputStr) { if (inputStr.length() % 2 != 0) { inputStr += " "; // Adding a space at the end if the string length is odd } StringBuilder result = new StringBuilder(); for (int i = 0; i < inputStr.length(); i += 2) { result.append(inputStr.charAt(i + 1)).append(inputStr.charAt(i)); } return result.toString(); } }