Wir wollen die Million! - 977.778 = 22.222 Beiträge!

import java.util.Scanner;


public class EPCalculator {


    public static void main(String[] args) {
            int current = 0;
            int desire = 0;
            int counter = 0;
            int ep[];

            System.out.println("Level Rechner - Clash of Clans\n");

            System.out.println("Geben Sie ihr jetziges Level ein:");

            Scanner sc = new Scanner(System.in);

            current = sc.nextInt();
            System.out.println("Geben Sie ihr Wunsch Level ein:");
            desire = sc.nextInt();
            sc.close();

            // calculate the size of the array
            ep = new int[desire - current];

            // calculate the ep
            for(int current2 = current; current2 < desire; current2++) {
                    ep[counter] = current2 * 50 + Math.max(0, (current2 - 199) * 450);
                    counter++;
            }

            // similar to phps array_sum() function
            int result = 0;
            for (int i = 0; i < ep.length; i++) {
                    result += ep[i];
            }

            System.out.println("Sie benötigen noch " + result + " EP um von Level " + current + " zu Level " + desire + " zu kommen.");
    }
}