add fizzbuzz from 1 to 100 feature

Author: albadc

src/main/java/edu/thoughtworks/training/FizzBuzz.java

@@ -1,12 +1,14 @@
 package edu.thoughtworks.training;
 
 public class FizzBuzz {
+ private static final String END_OF_LINE = "\n";
+
  public String represent(int number) {
- String representation = "";
- if (isDivisibleBy3(number)) representation += "Fizz";
- if (isDivisibleBy5(number)) representation += "Buzz";
- if (!isDivisibleBy3(number) && !isDivisibleBy5(number)) representation = String.valueOf(number);
- return representation;
+ StringBuilder representation = new StringBuilder();
+ if (isDivisibleBy3(number)) representation.append("Fizz");
+ if (isDivisibleBy5(number)) representation.append("Buzz");
+ if (!isDivisibleBy3(number) && !isDivisibleBy5(number)) representation.append(number);
+ return representation.toString();
  }
 
  private boolean isDivisibleBy5(int number) {
@@ -22,6 +24,9 @@ private boolean isDivisibleBy(int number, int i) {
  }
 
  public String fizzBuzz() {
- return null;
+ StringBuilder fizzBuzz = new StringBuilder();
+ for (int i = 1; i <= 100; ++i) fizzBuzz.append(represent(i)).append(END_OF_LINE);
+ return fizzBuzz.toString();
  }
+
 }

src/test/java/edu/thoughtworks/training/FizzBuzzShould.java

@@ -107,7 +107,7 @@ public class FizzBuzzShould {
  "97\n" +
  "98\n" +
  "Fizz\n" +
- "Buzz";
+  "Buzz\n";
 
  @Test
  public void returnFizzWhenNumberIsDivisibleBy3() {