Reformat and clean up "tools" package

src/main/java/tools/Randomizer.java

@@ -7,34 +7,34 @@ public class Randomizer {
     private final static Random rand = new Random();
 
     public static int nextInt() {
-	return rand.nextInt();
+        return rand.nextInt();
     }
 
     public static int nextInt(final int arg0) {
-	return rand.nextInt(arg0);
+        return rand.nextInt(arg0);
     }
 
     public static void nextBytes(final byte[] bytes) {
-	rand.nextBytes(bytes);
+        rand.nextBytes(bytes);
     }
 
     public static boolean nextBoolean() {
-	return rand.nextBoolean();
+        return rand.nextBoolean();
     }
 
     public static double nextDouble() {
-	return rand.nextDouble();
+        return rand.nextDouble();
     }
 
     public static float nextFloat() {
-	return rand.nextFloat();
+        return rand.nextFloat();
     }
 
     public static long nextLong() {
-	return rand.nextLong();
+        return rand.nextLong();
     }
 
     public static int rand(final int lbound, final int ubound) {
-	return (int) ((rand.nextDouble() * (ubound - lbound + 1)) + lbound);
+        return (int) ((rand.nextDouble() * (ubound - lbound + 1)) + lbound);
     }
 }