Reverse String Project

Question

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String text = scanner.nextLine();
char[] arr = text.toCharArray();

//your code goes here

char[] result = new char[arr.length];

//store the result in reverse order into the result char[]

for(int i=0; i<arr.length; i++)
{
result[i] = arr[arr.length - i - 1];
}

System.out.println(new String(result));
}
}

Here I will check all testcases successfully

Answer 1

Using for-each for simplicity.
4 lines of code added.

https://code.sololearn.com/cig6PA96rplT/?ref=app

Your original code has splitted the String into an Char[] array.

For-each loop loops through the Char[] array, one Char (i) at a time, from left-to-right order.

String rev is the temporary result.
"rev = i + rev" means you are adding the i to the front, reversing the String.

Answer 2

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String text = scanner.nextLine();
char[] arr = text.toCharArray();
for(int i=arr.length-1;i>=0;i--)
{
System.out.println(arr[i]);
}// Just we start printing from back side

}
}

Answer 3

OK. Thank you

Answer 4

K. Ayyaparaja

This is your problem?

Answer 5

Yes

Answer 6

K. Ayyaparaja Your program is looking correct. I don't think there would be any issue to pass all test cases.

Answer 7

Martin Taylor

The post is a coding question in SoloLearn, under Java, Arrays, after Module 3 Quiz (accessible only on mobile).

The existing codes have already split into char[] to demonstrate the understanding of Arrays.

One, in any queries, we should not be modifying the pre-existing codes. Two, for this case, we should not code using StringBuilder as that defeats the overall purpose of the Arrays lesson.

Answer 8

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String text = scanner.nextLine();
char[] arr = text.toCharArray();

char [] result = new char[arr.length];

for(int i = arr.length-1;i >=0;i--)
{

System.out.println(arr[i]);}

This is the code that I'm using, however it's printing out in an array instead of as a string, how do I get this to change?

Answer 9

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String text = scanner.nextLine();
char[] arr = text.toCharArray();
for(i=0;i<arr.length;i--){System.out.println(arr[i])};
//your code goes here

}}

this is my code is it correct?