Collin Beck

java/src/main/java/Bins.java

@@ -1,4 +1,22 @@
 
 public class Bins {
+    private int[] counts; // Array to store the count of each possible outcome
 
+    // Constructor to initialize the bins based on the number of dice and sides
+    public Bins(int size) {
+        this.counts = new int[size];
+    }
+    // Method to increment the count for a specific outcome
+    public void increment(int value) { 
+        counts[value]++; 
+    }
+
+    // Method to get the count for a specific outcome
+    public int getCount(int value) { 
+        return counts[value];
+    }
+
+    public int getSize() {
+        return counts.length;
+    }
 }

java/src/main/java/Dice.java

@@ -1,4 +1,22 @@
+import java.util.Random;
+
 public class Dice {
 
+    private int sides;
+    private int numberOfDice;           // stores the number of dice to be rolled
+    private Random random;
+
+    public Dice(int sides, int numberOfDice) {
+        this.sides = sides;
+        this.numberOfDice = numberOfDice;
+        this.random = new Random();
+    }
 
+    public int roll() {
+        int total = 0;
+        for (int i = 0; i < numberOfDice; i++) {            // loop to roll each die one by one 
+            total += random.nextInt(sides) + 1;             // adds each roll to the running total
+        }
+        return total;
+    }
 }

java/src/main/java/Simulation.java

@@ -1,5 +1,39 @@
 public class Simulation {
 
+public static void main(String[] args) {
+    Dice dice = new Dice(6, 2);     // Create a dice object with 6 sides and n dice to roll
+    Bins bins = new Bins(13); // Create bins to store the counts of each possible outcome
+    int numrolls = 1000000; // Number of rolls to simulate
 
+    System.out.println(); 
+    System.out.println("Rolling the dice...");
+    for (int i = 0; i < numrolls; i++) {                      // loop to roll the dice n times
+        int result = dice.roll();
+        bins.increment(result); // Increment the count for the rolled result
+        System.out.println("Roll " + (i + 1) + ": " + " Total: " + result);         //print result 
+    }
 
+    System.out.println("\nResults:");
+    for (int i = 2; i<= 12; i++) { 
+        double percentage = (bins.getCount(i) * 100.0) / numrolls; 
+        System.out.printf("Total %d: %5d times (%.2f%%)%n", i, bins.getCount(i), percentage); 
+    }
+
+    System.out.println("\nHistogram: ");
+    for (int i = 2; i <= 12; i++) { 
+        double percentage = (bins.getCount(i) * 100.0) / numrolls; 
+        String bar = makeBar(percentage);
+        System.out.printf("Total %2d: %-20s %.2f%%%n", i, bar, percentage); 
+    }
+}
+
+public static String makeBar(double percentage) { 
+    int blocks = (int) percentage; 
+    String bar = ""; 
+    for (int i = 0; i < blocks; i++) {
+        bar += "*"; 
+    }
+    return bar; 
 }
+}
+