Michael Pull request

java/src/main/java/Bins.java

@@ -1,4 +1,25 @@
 
 public class Bins {
+    int s;
+    int[] x;
+    int minimum;
+    int maximum;
+
+    public Bins(int min, int max) {
+        minimum = min;
+        maximum = max;
+        s = max - min + 1;
+        x = new int[s];
+    }
+
+    public void incrementBin(int value){
+        int i = value - minimum;
+        x[i]++;
+    }
+
+    public int getBin(int value){
+        int i = value - minimum;
+        return x[i];
+    }
 
 }

java/src/main/java/Dice.java

@@ -1,4 +1,23 @@
+
+import java.util.Random;
+
+
 public class Dice {
+    int d;
+
+    public Dice(int n){
+        d = n;
+    }
 
+    public int tossAndSum() {
+        Random rand = new Random();
+        int r;
+        int sum = 0;
+        for(int i= 0; i < d; i++){
+            r = rand.nextInt(6-1+1)+1;
+            sum = sum + r;
+        }
+        return sum;
+    }
 
-}
+}

java/src/main/java/Simulation.java

@@ -1,5 +1,73 @@
+import java.util.Scanner;
+
 public class Simulation {
+    int nDice;
+    int nToss;
+    int min;
+    int max;
+    Dice dice;
+    Bins bins;
+
+
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        int nDice = getInput(scanner, "Please enter number of dice: ");
+        int nToss = getInput(scanner, "Please enter number of toss: ");
+
+        Simulation sim = new Simulation(nDice, nToss);
+        sim.runSimulation();
+        sim.printResult();
+        scanner.close();
+
+    }
+
+    public Simulation(int nDice, int nToss){
+        this.nDice = nDice;
+        this.nToss = nToss;
+        min = nDice;
+        max = nDice * 6;
+        dice = new Dice(nDice);
+        bins = new Bins(min, max);
+    }
 
+    public void runSimulation(){
+        for(int i = 1; i <= nToss; i++){
+            int result = dice.tossAndSum();
+            bins.incrementBin(result);
+        }
+    }
 
+    public void printResult(){
+        for(int i = min; i <= max; i++){
+            int count = bins.getBin(i);
+            double prob = (double) count / nToss;
+            int starsCount = (int) (prob * 100); 
+            System.out.printf("%2d : %7d : %.2f ", i, count, prob);
+            for(int j = 0; j < starsCount; j++){
+            System.out.print("*");
+            }
+            System.out.println();
+        }
+    }
+
+    public static int getInput(Scanner scanner, String Prompt){
+    while(true){
+        System.out.print(Prompt);
+        if(!scanner.hasNextInt()){
+            System.out.println("Invalid Input. Please input a number.");
+            scanner.next();
+            continue;
+        } 
+        int value = scanner.nextInt();
+
+        if(value <= 0){
+        System.out.println("Please enter positive number.");
+        continue;
+        }
+        return value;
+    }
 
 }
+}
+

java/target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst

@@ -0,0 +1,3 @@
+/Users/michael/Projects/DiceyLab/java/src/main/java/Simulation.java
+/Users/michael/Projects/DiceyLab/java/src/main/java/Bins.java
+/Users/michael/Projects/DiceyLab/java/src/main/java/Dice.java