completed quiz

LoopFun.java

@@ -8,7 +8,12 @@ public class LoopFun
        * @return the factorial of the number
        */
       public int factorial(int number){
-          return -1;
+            int fct = 1;
+            for(int i=1; i<=number; i++){
+              fct *= i;
+            }
+
+          return fct;
       }
 
       /**
@@ -19,7 +24,13 @@ public class LoopFun
        * @return Upper case string of the first letter of each word
        */
       public String acronym(String phrase) {
-          return null;
+
+        String acr = new String();
+        for(String str : phrase.split(" ")){
+          acr += str.charAt(0);
+        }
+        acr = acr.toUpperCase();
+        return acr;
       }
 
       /**
@@ -35,6 +46,33 @@ public class LoopFun
        * @return the encrypted string by shifting each character by three character
        */
       public String encrypt(String word) {
-          return null;
+        String cryptStr = new String();
+        word = word.toLowerCase();
+        char chArr[] = word.toCharArray();
+        for(char ch : chArr){
+          switch(ch){
+            case ' ':
+                    break;
+            case 'z':
+                        ch = 'c';
+                        cryptStr += ch;
+                    break;
+            case 'y':
+                        ch = 'b';
+                        cryptStr += ch;
+                    break;
+            case 'x':
+                        ch = 'a';
+                        cryptStr += ch;
+                    break;
+            default:
+                        ch += 3;
+                        cryptStr += ch;
+                    break;
+          }
+
+        }
+
+          return cryptStr;
       }
 }

MathUtilities.java

@@ -6,7 +6,7 @@ public class MathUtilities{
    * @return the sum of the two numbers
    */
   public int add(int num1, int num2){
-      return -1;
+      return num1 + num2;
   }
 
   /**
@@ -16,7 +16,7 @@ public class MathUtilities{
    * @return the sum of the two numbers
    */
   public double add(double num1, double num2){
-      return -1;
+      return num1 + num2;
   }
 
   /**
@@ -25,7 +25,7 @@ public class MathUtilities{
    * @return the half of the number in double
    */
   public double half(int number) {
-      return -1;
+      return (double)number/2 ;
   }
 
   /**
@@ -34,7 +34,14 @@ public class MathUtilities{
    * @return true if the number is odd, false if it is even
    */
   public boolean isOdd(int number){
-      return false;
+    boolean odd;
+    if(number%2 == 1){
+      odd = true;
+    }
+    else{
+      odd = false;
+    }
+      return odd;
   }
 
 
@@ -44,7 +51,7 @@ public class MathUtilities{
    * @return the result of the number multiply by itself
    */
   public int square(int number) {
-      return -1;
+      return number*number;
   }
 
 }

StringUtilities.java

@@ -1,13 +1,39 @@
 public class StringUtilities {
+
    public Character getMiddleCharacter(String word){
-       return null;
+      char middle;
+      int pos, len;
+      char ch[] = word.toCharArray();
+
+      len = ch.length;
+      if(ch.length%2 == 0){
+          pos = (len/2 - 1)+1;
+      } else{
+          pos = len/2;
+      }
+
+      middle = ch[pos];
+      return middle;
    }
-   
+
    public String removeCharacter(String value, char charToRemove){
-     return null;  
+
+     char ch[] = value.toCharArray();
+     String newStr = new String();
+     int len = ch.length;
+
+     for(int i=0; i < len; i++){
+       if(ch[i] != charToRemove){
+         newStr += ch[i];
+       } else{
+       }
+     }
+     return newStr;
    }
-   
-   public String getLastWord(String value) {
-       return null;
+
+   public String getLastWord(String value){
+
+      String lastWord = value.substring(value.lastIndexOf(" ")+1);
+       return lastWord;
    }
 }

package.bluej

@@ -2,25 +2,25 @@
 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.width=876
-editor.fx.0.x=158
-editor.fx.0.y=216
-objectbench.height=164
+editor.fx.0.x=445
+editor.fx.0.y=24
+objectbench.height=151
 objectbench.width=669
 package.divider.horizontal=0.6
-package.divider.vertical=0.7628294036061026
-package.editor.height=543
+package.divider.vertical=0.7620481927710844
+package.editor.height=499
 package.editor.width=567
-package.editor.x=557
-package.editor.y=43
-package.frame.height=779
+package.editor.x=0
+package.editor.y=23
+package.frame.height=722
 package.frame.width=693
 package.numDependencies=3
 package.numTargets=6
@@ -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