Array out of bound exp

#1

import java.io.;
import java.util.;

public class Solution {

public static void dup(String str,int i,String ans)
{
    if(i==str.length())
        System.out.println(ans);
    
    if(str.charAt(i)==str.charAt(i+1))
    {
        char st=str.charAt(i);
        dup( str,i+2, ans+st);
    }
    else{
         char st=str.charAt(i);
         dup(str,i+1,ans+st);
    }
        
    
}

public static void main(String[] args) {
    Scanner s=new Scanner(System.in);
    String a=s.nextLine();
    
   dup(a,0," ");
    
    
    
}

}
how can we remove out of bound exception while comparing with next element ?

#2

Hi @Kapsime_S,
I can’t really understand what you are trying to do here … This is in regards with coin change problem right??
Because there was that selected so i don’t understand in regards of which question are you asking doubt.

#3

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