Fix style and bug in printEvens

Author: phrdang

src/com/codefortomorrow/intermediate/chapter11/practice/Average.java

@@ -1,7 +1,6 @@
 package com.codefortomorrow.intermediate.chapter11.practice;
 
 public class Average {
-
     /**
      * Difficulty: 1
      *
@@ -11,6 +10,6 @@ public class Average {
      * @return average
      */
     public static double average(double a, double b) {
-        return 0.0; //TODO: Fix!
+        return 0.0; // TODO: Fix!
     }
 }

src/com/codefortomorrow/intermediate/chapter11/practice/PrintEvens.java

@@ -5,9 +5,10 @@ public class PrintEvens {
      * Difficulty: 1
      *
      * Print the first n even integers
+     * (consider 0 an even number)
      * @param n number of even integers to print
      */
     public static void printEvens(int n) {
-
+        // write code here
     }
 }

src/com/codefortomorrow/intermediate/chapter11/solutions/Average.java

@@ -1,7 +1,6 @@
 package com.codefortomorrow.intermediate.chapter11.solutions;
 
 public class Average {
-
     /**
      * Difficulty: 1
      *
@@ -11,8 +10,6 @@ public class Average {
      * @return average
      */
     public static double average(double a, double b) {
-        return (a + b)/2;
+        return (a + b) / 2;
     }
-
-
 }

src/com/codefortomorrow/intermediate/chapter11/solutions/PrintEvens.java

@@ -5,6 +5,7 @@ public class PrintEvens {
      * Difficulty: 2
      *
      * Print the first n even integers
+     * (consider 0 an even number)
      * @param n number of even integers to print
      */
     public static void printEvens(int n) {
@@ -13,7 +14,7 @@ public static void printEvens(int n) {
         while (evens < n) {
             if (i % 2 == 0) {
                 System.out.print(i + " ");
-                n++;
+                evens++;
             }
             i++;
         }