Not getting output

#1

problem occuring at line 18 of code; sb.insert(i, d)

code: import java.util.;
import java.io.;
public class Main {

public static void main(String args[]) throws IOException {

   Scanner sc = new Scanner(System.in);
   String s = sc.nextLine();

    asciiDifference(s);
}

public static void asciiDifference(String s) {
    StringBuilder sb = new StringBuilder(s);
    int d = 0;
    for(int i = 1; i < sb.length(); i++) {
        d = sb.charAt(i) - sb.charAt(i-1);
        sb.insert(i, d);
        i++;
    }
    System.out.println(sb);
}

}

#2

Use coding blocks ide to write code and share the link here.

#3

In line number 18 you are getting error because the for loop is becoming an infinite loop in some cases because of 2 reasons :

  1. as you are inserting the difference of 2 characters in the string as the size of string is also increasing and in loop you have condition i < size.length() is never achieved.
  2. when you insert a number in the string at a position , next time the loop is executed the number is also taken for difference.

For more clarity you can insert a print statement after sb.insert() and debug your code.