REVERSE A STRING WITH PRESERVING THE POSITION OF SPACES

 

REVERSE A STRING WITH PRESERVING THE POSITION OF SPACES

PROGRAM:

I/P: hi hello everyone

O/P:en oyrev eollehih

package Strings;

import java.util.*;

public class ReverseStringRetainingSpace {

    public static void main(String[] args) {

        Scanner sc=new Scanner(System.in);

        String s1=sc.nextLine();

        sc.close();

        char c1[]=s1.toCharArray();

        char c2[]=new char[c1.length];

        for(int i=0;i<c1.length;i++)

        {

            if(c1[i]==' ')

            {

                c2[i]=' ';

            }

        }

        int j=c2.length-1;

        for(int i=0;i<c1.length;i++)

        {

            if(c1[i]!=' ')

            {

                if(c2[j]==' ')

                {

                    j--;

                }

                c2[j]=c1[i];

                j--;

            }

            

        }

        System.out.println(String.valueOf(c2));     

    }

}