add Utils.java and update Even.java

Author: Aleksandr Pronichev

app/src/main/java/hexlet/code/Utils.java

@@ -0,0 +1,11 @@
+package hexlet.code;
+
+import java.util.Random;
+
+public class Utils {
+    public static int getRandomInt(int minNumber, int maxNumber) {
+        Random random = new Random();
+        int randomNumber = random.nextInt(maxNumber - minNumber + 1) + minNumber;
+        return randomNumber;
+    }
+}

app/src/main/java/hexlet/code/games/Even.java

@@ -1,10 +1,12 @@
 package hexlet.code.games;
 
 import hexlet.code.Engine;
+import hexlet.code.Utils;
 
 public class Even {
 
     private static final String RULES = "Answer 'yes' if the number is even, otherwise answer 'no'.";
+    private static final int MIN_NUMBER = 1;
     private static final int MAX_NUMBER = 100;
 
     public static void gameEven() {
@@ -15,13 +17,17 @@ public static void gameEven() {
     public static String[][] generateData() {
         String[][] questionsAndAnswers = new String[Engine.ROUNDS][2];
         for (int i = 0; i < Engine.ROUNDS; i++) {
-            int number = (int) (Math.random() * MAX_NUMBER);
+            int number = Utils.getRandomInt(MIN_NUMBER, MAX_NUMBER);
             String question = Integer.toString(number);
-            String correctAnswer = (number % 2 == 0) ? "yes" : "no";
+            String correctAnswer = isEven(number);
             questionsAndAnswers[i][0] = question;
             questionsAndAnswers[i][1] = correctAnswer;
         }
         return questionsAndAnswers;
     }
+
+    public static String isEven(int number) {
+        return (number % 2 == 0) ? "yes" : "no";
+    }
 }