HackerEarth String Sum problem solution

In this HackerEarth String Sum problem solution Consider All lowercase Alphabets of the English language. Here we consider each alphabet from a to z to have a certain weight. The weight of the alphabet a is considered to be 1, b to be 2, c to be 3, and so on until z has a weight of 26. In short, the weight of the alphabet a is 1, and the weight of all other alphabets is the weight of its previous alphabet + 1.

Now, you have been given a String S consisting of lowercase English characters. You need to find the summation of the weight of each character in this String.

HackerEarth String Sum problem solution.

import java.io.*;
import java.util.*;
class example_2
{
    static Scanner sc;
    static PrintWriter out;

    static void init() throws Exception
    {
        sc=new Scanner(System.in);
        out=new PrintWriter(System.out);
    }

    public static void main(String args[]) throws Exception
    {
        init();
        char[] a=sc.next().toCharArray();
        long sum=0;
        for(char ch:a)
        {
            sum=sum+(ch-'a'+1);
        }
        out.println(sum);
        out.close();
    }
}