Concatenate the sums of each word to form the result WORLD WIDE WEB = 402326?

Question

Crazy Zak has designed the below steps which can be applied on any given string (sentence) to produce a number.
In each word, find the Sum of the Difference between the first letter and the last letter, second letter and the penultimate letter, and so on till the center of the word.
Concatenate the sums of each word to form the result.
If the given string is “WORLD WIDE WEB”
In each word, find the Sum of the Difference between the first letter and the last letter, second letter and the penultimate letter, and so on till the center of the word.

WORLD = [W-D]+[O-L]+[R] = [23-4]+[15-12]+[18] = [19]+[3]+[18] = [40]

WIDE = [W-E]+[I-D] = [23-5]+[9-4] = [18]+[5] = [23]

WEB = [W-B]+[E] = [23-2]+[5] = [21]+[5] = [26]
Concatenate the sums of each word to form the result
[40] [23] [26]
[402326]

The answer (output) should be the number 402326.

NOTE1: The value of each letter is its position in the English alphabet system i.e. a=A=1, b=B=2, c=C=3, and so on till z=Z=26.

So, the result will be the same for “WORLD WIDE WEB” or “World Wide Web” or “world wide web” or any other combination of uppercase and lowercase letters.

In Step1, after subtracting the alphabets, we should use the absolute values for calculating the sum. For instance, in the below example, both [H-O] and [E-L] result in negative number -7, but the positive number 7 (absolute value of -7) is used for calculating the sum of the differences.
Hello = [H-O]+[E-L]+[L] = [8-15]+[5-12]+[12] = [7]+[7]+[12] = [26]

Assumptions: The given string (sentence) will contain only alphabet characters and there will be only one space character between any two consecutive words.
You are expected to help Zak, by writing a function that takes a string (sentence) as input, performs the above mentioned processing on the sentence and returns the result (number).

Answer 1

public class WORLDWIDEWEB {

public int getLetterNo(char letter){
return (int)letter-64;
}

public int diffLetter(int a, int b){
int difference=a-b;
if(difference<0)
    difference*=-1;
return difference;
}

public static void main(String[] args){
String input1="WORLD WIDE WEB";
char ch1,ch2;
int counter;
int center;
int num1,num2;
int sum=0;
int output=0;
String[] words=input1.toUpperCase().split("\\s");
String totall="";

for(String w:words){
    counter=0;
    center=w.length()/2;
    sum=0;
    while(counter<center){
        ch1=w.charAt(counter);
        ch2=w.charAt(w.length()-counter-1);
        counter++;
        num1=getLetterNo(ch1);
        num2=getLetterNo(ch2);
        sum+=diffLetter(num1,num2);
    }
    if(w.length()%2!=0)
        sum+=getLetterNo(w.charAt(center));
    totall+=sum;
}
output=Integer.valueOf(totall);


System.out.println(output);    
}

}

Comments

Wonderful thanks for the precise answer

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how to call non static method on main method am getting error
WORLDWIDEWEB w = new WORLDWIDEWEB();
w.getLetterNo();

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Creating the class object where the method is defined. then call inside the main method.

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can you pls give this code in c langugae...