sorry i took so long

pom.xml

@@ -7,6 +7,14 @@
     <groupId>com.zipcodewilmington</groupId>
     <artifactId>Dicey-Lab</artifactId>
     <version>1.0-SNAPSHOT</version>
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
 
 
 </project>

src/main/java/Bins.java

@@ -1,4 +1,31 @@
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
 
 public class Bins {
 
+    Integer[] bins;
+    Integer min;
+    Integer max;
+
+    public Bins(Integer min, Integer max) {
+        bins = new Integer[max - min + 1];
+        this.min = min;
+        this.max = max;
+        Arrays.fill(bins, 0);
+    }
+
+    // looking for one index array [6]
+    public Integer getBinValue(Integer diceRoll) {
+
+        return bins[diceRoll - min];
+    }
+
+    public Integer[] getBins() {
+        return bins;
+    }
+
+    public Integer incrementBins(Integer diceRoll) {
+        return bins[diceRoll - min] ++;
+    }
 }

src/main/java/Dice.java

@@ -1,4 +1,32 @@
 public class Dice {
 
+    private int numberOfDie;
 
-}
+    public Dice(int numberOfDice) {
+        numberOfDie = numberOfDice;
+    }
+
+    public int tossAndSum() {
+        int sumOfDice = 0;
+        for (int i = 0; i < numberOfDie; i++) {
+            sumOfDice += rollDie();
+        }
+
+        return sumOfDice;
+    }
+
+    public int rollDie() {
+
+        return (int) (Math.random() * 6 + 1);
+    }
+
+    public int getNumberOfDie() {
+        return numberOfDie;
+    }
+
+    public void setNumberOfDie(int numberOfDie) {
+        this.numberOfDie = numberOfDie;
+    }
+
+
+}

src/main/java/Simulation.java

@@ -1,5 +1,50 @@
 public class Simulation {
 
+    Integer numberOfDice;
+    Integer numberOfTosses;
+    Dice dice;
+    Bins bins;
 
+    public Simulation(Integer numberOfDice, Integer numberOfTosses) {
+        this.numberOfDice = numberOfDice;
+        this.numberOfTosses = numberOfTosses;
+    }
 
-}
+    public void runSimulation() {
+        this.dice = new Dice(2);
+        this.bins = new Bins(2, 12);
+
+        for (int i = 0; i < numberOfTosses; i++) {
+            Integer sumUp = dice.tossAndSum();
+            bins.incrementBins(sumUp);
+        }
+        System.out.println("");
+    }
+
+    public void printResults() {
+        for(Integer i = 2; i <= 12; i++) {
+            Double percentage = (double) bins.getBinValue(i) / numberOfTosses;
+            System.out.printf("%2d : %7d: %.2f ", i, bins.getBinValue(i), percentage);
+            for(int j = 1; j < percentage * 100; j++)
+            {
+                System.out.print("*");
+            }
+            System.out.println();
+        }
+    }
+
+
+    public double getPercentage(Integer numberOfTosses, Bins bins) {
+        double percentage = 0;
+        for( int element : bins.getBins()) {
+            percentage = element/ numberOfTosses;
+        }
+        return percentage;
+    }
+
+    public static void main(String[] args) {
+        Simulation simulation = new Simulation(2, 1000000);
+        simulation.runSimulation();
+        simulation.printResults();
+    }
+}

src/test/java/BinsTest.java

@@ -0,0 +1,31 @@
+import org.junit.Test;
+
+public class BinsTest {
+    @Test
+    public void numberOfEachNumberTest(){
+        // given
+
+        // when
+
+        //then
+
+    }
+    @Test
+    public void binIncrementTest(){
+        // given
+
+        // when
+
+        // then
+
+    }
+    @Test
+    public void percentageOfRollTest(){
+        // given
+
+        // when
+
+        // then
+
+    }
+}

src/test/java/DiceTest.java

@@ -0,0 +1,22 @@
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class DiceTest {
+    @Test
+    public void tossAndSumTest(){
+        // given
+        Dice dice = new Dice(2);
+
+        // when
+        dice.tossAndSum();
+
+        // then
+
+    }
+
+    }
+
+