Starting git repo for working on files

module2/BandMatrix.java

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+public class BandMatrix
+{
+    public static void main(String[] args)
+    {
+        int n = Integer.parseInt(args[0]);
+        int width = Integer.parseInt(args[1]);
+
+        for (int i = 0; i < n; i++)
+        {
+            for (int j = 0; j < n; j++)
+            {
+                if ((j - i <= width) && (i -j <= width))
+                {
+                    System.out.print(" * ");
+                }
+                else
+                {
+                    System.out.print(" 0 ");
+                }
+            }
+            System.out.println("\n");
+        }
+    }
+}

module2/GeneralizedHarmonic.java

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+public class GeneralizedHarmonic
+{
+    public static void main(String[] args)
+    {
+        int n = Integer.parseInt(args[0]);
+        int r = Integer.parseInt(args[1]);
+        if (r >= 0 && n >= 0)
+        {
+            double h = 0;
+            double breuk = 0;
+            for (int i = 1; i <= n; i++ )
+            {
+                breuk = 1/(Math.pow(i,r));
+                h += breuk;
+            }
+            System.out.println(h);
+        }
+        else
+        {
+            System.out.println("Negative number in one of the arguments");
+        }       
+    }
+}

module2/RandomWalker.java

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+public class RandomWalker
+{
+    public static void main(String[] args)
+    {
+        int r = Integer.parseInt(args[0]);
+
+        int xCoordinate = 0;
+        int yCoordinate = 0;
+        int steps = 0;
+
+        System.out.println("(" + xCoordinate + ", " + yCoordinate + ")" );
+        
+        while(Math.abs(xCoordinate) + Math.abs(yCoordinate) < r)
+        {
+            if(Math.random() <= 0.25)       xCoordinate += 1;
+            else if (Math.random() <= 0.50) xCoordinate -= 1;
+            else if (Math.random() <= 0.75) yCoordinate += 1;
+            else                            yCoordinate -= 1;
+
+            System.out.println("(" + xCoordinate + ", " + yCoordinate + ")" );
+            steps++; 
+        }
+        System.out.println("steps = " + steps);
+    }
+}

module2/RandomWalkers.java

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+public class RandomWalkers
+{
+    public static void main(String[] args)
+    {
+        int r = Integer.parseInt(args[0]);
+        int trials = Integer.parseInt(args[1]);
+        
+        int xCoordinate = 0;
+        int yCoordinate = 0;
+        int steps = 0;
+        double average = 0;
+
+        //System.out.println("(" + xCoordinate + ", " + yCoordinate + ")" );
+
+        for(int i = 1; i <= trials; i++)
+        {
+            while(Math.abs(xCoordinate) + Math.abs(yCoordinate) < r)
+            {
+                if(Math.random() <= 0.25)       xCoordinate += 1;
+                else if (Math.random() <= 0.50) xCoordinate -= 1;
+                else if (Math.random() <= 0.75) yCoordinate += 1;
+                else                            yCoordinate -= 1;
+
+                //System.out.println("(" + xCoordinate + ", " + yCoordinate + ")" );
+                steps++; 
+            }
+        }
+        average = (float) steps / trials; 
+        System.out.println("average number of steps = " + average);
+    }
+}