Solution.java

import java.util.*;
 
public class Solution {
      
       static boolean isPrimeNumber(int number){
             for ( int i = 2; i <= number/2; i++ ){
                    if( number%i == 0 ){
                           return false;
                    }
             }
             return true;
       }
      
       static int findLargestAbsolutePrimeInRange(int maximum){
             List<Integer> primes = new ArrayList<Integer>();
             for ( int i = 1; i < maximum; i++ ){
                    boolean isPrime = isPrimeNumber(i);
                    if(isPrime){
                           primes.add(i);
                    }
             }
             int maxSum = 0;
             int largestPrime = 0;
             for ( int x : primes ){
                    String prime = Integer.toString(x);
                    char[] parts = prime.toCharArray();
                    int sum = 0;
                    for ( int i = 0; i < parts.length; i++ ){
                           sum+=Character.getNumericValue(parts[i]);
                    }
                    if(sum > maxSum){
                           maxSum = sum;
                           largestPrime = x;
                    }
             }
             return largestPrime;
       }
       public static void main(String[] args){
             System.out.println(findLargestAbsolutePrimeInRange(17));
             System.out.println(findLargestAbsolutePrimeInRange(23));
             System.out.println(findLargestAbsolutePrimeInRange(15));
             System.out.println(findLargestAbsolutePrimeInRange(100));
       }
}