Question

Write a Java program that reads in 5 words from the user and stores these words in a String array. Then your program needs to print 2 lines of output with the following information:

• All words are in reverse order (based both on content and order).
• Every word at an even index of the array (i.e., indices 0, 2, and 4).

For example, if user inputs "ABC", "DEF", "TY", "JK", and "WE". Then your program should output the following two lines:

EW, KJ, YT, FED, CBA
ABC, TY, WE

Answer 1

import java.util.Scanner;

public class TestCode {

    public static String reverse(String str){
        if(str.length() == 0){
            return "";
        }
        else{
            return str.charAt(str.length()-1)+reverse(str.substring(0,str.length()-1));
        }
    }

    public static void main(String[] args)
    {
        Scanner scanner = new Scanner(System.in);

        String[] arr = new String[5];

        System.out.println("Enter 5 words");
        for(int i = 0;i<arr.length;i++){
            arr[i] = scanner.next();
        }

        for(int i = arr.length-1;i>=0;i--){
            System.out.print(reverse(arr[i])+" ");
        }
        System.out.println();

        for(int i = 0;i<arr.length;i++){
            if(i%2==0){
                System.out.print(arr[i]+" ");
            }
        }
        System.out.println();

    }
}