Completed

LoopFun.java

@@ -1,40 +1,74 @@
 public class LoopFun
 {
 
-      /**
-       * Given a number, return the factorial of that number.
-       * For example, given 5, the factorial is 5 x 4 x 3 x 2 x 1 which should return 120.
-       * @param number
-       * @return the factorial of the number
-       */
-      public int factorial(int number){
-          return -1;
-      }
-
-      /**
-       * Given a phrase, get the acronym of that phrase. Acronym is the combination of
-       * the first character of each word in upper case.
-       * For example, given "Ruby on Rails", this method will return "ROR"
-       * @param phrase
-       * @return Upper case string of the first letter of each word
-       */
-      public String acronym(String phrase) {
-          return null;
-      }
-
-      /**
-       * To prevent anyone from reading our messages, we can encrypt it so it will only be readable by its
-       * intended audience. This method encrypt the message by shifting the letter by 3 characters. If the character is
-       * at the end of the alphabet, it will wraps around.
-       * For example:
-       *  'a' => 'd'
-       *  'w' => 'z'
-       *  'x' => 'a'
-       *  'y' => 'b'
-       * @param word
-       * @return the encrypted string by shifting each character by three character
-       */
-      public String encrypt(String word) {
-          return null;
-      }
+    /**
+     * Given a number, return the factorial of that number.
+     * For example, given 5, the factorial is 5 x 4 x 3 x 2 x 1 which should return 120.
+     * @param number
+     * @return the factorial of the number
+     */
+    public int factorial(int number){
+        int result = 1;
+        for (int i = number; i>1; i--){
+            result*=i;
+        }
+        return result;
+    }
+
+    /**
+     * Given a phrase, get the acronym of that phrase. Acronym is the combination of
+     * the first character of each word in upper case.
+     * For example, given "Ruby on Rails", this method will return "ROR"
+     * @param phrase
+     * @return Upper case string of the first letter of each word
+     */
+    public String acronym(String phrase) {
+        String[] strArray = phrase.split(" ");
+        StringBuilder sb = new StringBuilder();
+
+        for(String word : strArray){
+            sb.append(word.charAt(0));
+        }
+
+        String result = sb.toString().toUpperCase();
+
+        return result;
+    }
+
+    /**
+     * To prevent anyone from reading our messages, we can encrypt it so it will only be readable by its
+     * intended audience. This method encrypt the message by shifting the letter by 3 characters. If the character is
+     * at the end of the alphabet, it will wraps around.
+     * For example:
+     *  'a' => 'd'
+     *  'w' => 'z'
+     *  'x' => 'a'
+     *  'y' => 'b'
+     * @param word
+     * @return the encrypted string by shifting each character by three character
+     */
+    public String encrypt(String word) {
+        StringBuilder sb = new StringBuilder();
+        char testChar;
+        //a = 97; z = 122; y = 120;
+
+        for (int i=0; i<word.length(); i++){
+
+            if(word.charAt(i)>=120){
+                testChar = word.charAt(i);
+                testChar -= 23;
+                sb.append(testChar);
+            } else {
+                testChar = word.charAt(i);
+                testChar += 3;
+                sb.append(testChar);
+            }
+
+        }
+
+        String result = sb.toString();
+        System.out.print(result);
+
+        return result;
+    }
 }

MathUtilities.java

@@ -1,50 +1,60 @@
 public class MathUtilities{
-  /**
-   * Add two number together
-   * @param num1 first number
-   * @param num2 second number
-   * @return the sum of the two numbers
-   */
-  public int add(int num1, int num2){
-      return -1;
-  }
+    /**
+     * Add two number together
+     * @param num1 first number
+     * @param num2 second number
+     * @return the sum of the two numbers
+     */
+    public int add(int num1, int num2){
+        int result = num1+num2;
+        return result;
+    }
 
-  /**
-   * Add two number together
-   * @param num1 first number
-   * @param num2 second number
-   * @return the sum of the two numbers
-   */
-  public double add(double num1, double num2){
-      return -1;
-  }
+    /**
+     * Add two number together
+     * @param num1 first number
+     * @param num2 second number
+     * @return the sum of the two numbers
+     */
+    public double add(double num1, double num2){
+        double result = num1+num2;
+        return result;
+    }
 
-  /**
-   * Get half the value of the number
-   * @param number the number given
-   * @return the half of the number in double
-   */
-  public double half(int number) {
-      return -1;
-  }
+    /**
+     * Get half the value of the number
+     * @param number the number given
+     * @return the half of the number in double
+     */
+    public double half(int number) {
+        double result = number/2.0;
+        return result;
+    }
 
-  /**
-   * Determine if the number is odd
-   * @param number the number given
-   * @return true if the number is odd, false if it is even
-   */
-  public boolean isOdd(int number){
-      return false;
-  }
+    /**
+     * Determine if the number is odd
+     * @param number the number given
+     * @return true if the number is odd, false if it is even
+     */
+    public boolean isOdd(int number){
+        boolean result;
+        if (number%2 == 1){
+            result = true;
+        } else {
+            result = false;
+        }
 
+        return result;
+    }
 
-  /**
-   * Multiply the number by itself
-   * @param number the number given
-   * @return the result of the number multiply by itself
-   */
-  public int square(int number) {
-      return -1;
-  }
+    /**
+     * Multiply the number by itself
+     * @param number the number given
+     * @return the result of the number multiply by itself
+     */
+    public int square(int number) {
+        int result = number*number;
+        return result;
+    }
 
 }

StringUtilities.java

@@ -1,13 +1,28 @@
 public class StringUtilities {
    public Character getMiddleCharacter(String word){
-       return null;
+       char result;
+       int length = word.length();
+       
+       if(length%2 == 1){ //odd
+           result = word.charAt((length-1)/2);
+        } else { //even
+            result = word.charAt((length/2));
+        }
+        
+       return result;
    }
    
    public String removeCharacter(String value, char charToRemove){
-     return null;  
+       String strToRemove = Character.toString(charToRemove);
+       String result = value.replace(strToRemove,"");
+     
+       return result;  
    }
    
    public String getLastWord(String value) {
-       return null;
+       String[] strArray = value.split(" ");
+       String result = strArray[strArray.length-1];
+       
+       return result;
    }
 }

package.bluej

@@ -2,26 +2,26 @@
 dependency1.from=StringUtilitiesTest
 dependency1.to=StringUtilities
 dependency1.type=UsesDependency
-dependency2.from=BonusTest
-dependency2.to=Bonus
+dependency2.from=LoopFunTest
+dependency2.to=LoopFun
 dependency2.type=UsesDependency
 dependency3.from=MathUtilitiesTest
 dependency3.to=MathUtilities
 dependency3.type=UsesDependency
-editor.fx.0.height=722
+editor.fx.0.height=716
 editor.fx.0.width=876
-editor.fx.0.x=158
-editor.fx.0.y=216
-objectbench.height=164
-objectbench.width=669
+editor.fx.0.x=390
+editor.fx.0.y=23
+objectbench.height=148
+objectbench.width=747
 package.divider.horizontal=0.6
-package.divider.vertical=0.7628294036061026
-package.editor.height=543
-package.editor.width=567
-package.editor.x=557
-package.editor.y=43
-package.frame.height=779
-package.frame.width=693
+package.divider.vertical=0.7644376899696048
+package.editor.height=496
+package.editor.width=645
+package.editor.x=63
+package.editor.y=161
+package.frame.height=716
+package.frame.width=771
 package.numDependencies=3
 package.numTargets=6
 package.showExtends=true
@@ -40,20 +40,19 @@ target1.width=110
 target1.x=110
 target1.y=150
 target2.height=50
-target2.name=BonusTest
+target2.name=LoopFunTest
 target2.showInterface=false
 target2.type=UnitTestTargetJunit4
-target2.width=80
-target2.x=120
-target2.y=270
-target3.association=BonusTest
+target2.width=110
+target2.x=10
+target2.y=240
 target3.height=50
-target3.name=Bonus
+target3.name=LoopFun
 target3.showInterface=false
 target3.type=ClassTarget
 target3.width=80
-target3.x=90
-target3.y=300
+target3.x=200
+target3.y=210
 target4.association=MathUtilitiesTest
 target4.height=50
 target4.name=MathUtilities