String Characters Interlace

Java Code:

import java.util.*;
public class Hello
 {
    public static void main(String[] args)
 {
    Scanner s=new Scanner(System.in);
String str=s.nextLine();
char ch[]=str.toCharArray();
int f=1,g=0,l=ch.length;
char c[]=new char[l];
for(int i=0;i<l;i++)
{
    if(i%2==0)
    {
    c[i]=ch[i-g];
    g++;
    }
    else
    {
    c[i]=ch[l-f];
    f++;
    }
}
for(int i=0;i<l;i++)
System.out.print(c[i]+" ");
    }
}

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