NumberUtilities.java

@@ -1,32 +1,56 @@
- 
-
 
 public class NumberUtilities {
-    
-    public static String getRange(int start) {
-        return null;
-    }
-    
-    public static String getRange(int start, int stop) {
-        return null;
-    }
-
-
-    public static String getRange(int start, int stop, int step) {
-        return null;
-    }
-    
-    public static String getEvenNumbers(int start, int stop) {
-        return null;
-    }
-
-
-    public static String getOddNumbers(int start, int stop) {
-        return null;
-    }
 
+   public static String getRange(int stop) {
+       String rangeOfNumbers = "";
+       for (int i = 0;i < stop; i++){
+       rangeOfNumbers = rangeOfNumbers + i;
+       }
+       return rangeOfNumbers;
+   }
+
+   public static String getRange(int start, int stop) {
+       String rangeOfNumbers = "";
+       for (int i = start;i < stop; i++){
+       rangeOfNumbers = rangeOfNumbers + i;
+       }
+       return rangeOfNumbers;
+   }
+
+
+   public static String getRange(int start, int stop, int step) {
+       String rangeOfNumbers = "";
+       for (int i = start;i < stop; i += step){
+       rangeOfNumbers = rangeOfNumbers + i;
+       }
+       return rangeOfNumbers;
+   }
+
+   public static String getEvenNumbers(int start, int stop) {
+       String evenNumbers="";
+       for (int i = start; i < stop; i++)
+       if (i % 2 == 0){
+         evenNumbers = evenNumbers + i;
+       }
+       return evenNumbers;
+   }
+
+
+   public static String getOddNumbers(int start, int stop) {
+       String oddNumbers="";
+       for (int i = start; i < stop; i++)
+       if (i % 2 != 0){
+         oddNumbers = oddNumbers+i;
+       } return oddNumbers;
+   }
+
+
+   public static String getExponentiations(int start, int stop, int exponent)  {
+       String exponents="";
+       for (int i = start; i <= stop; i++) {
+       exponents += (int)Math.pow(i,exponent);
+   }
+       return exponents;
 
-    public static String getExponentiations(int start, int stop, int exponent) {
-        return null;
-    }
 }
+}

TableUtilities.java

@@ -2,14 +2,21 @@
 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+        return getMultiplicationTable(5);
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+        return getMultiplicationTable(10);
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        StringBuilder sb = new StringBuilder();
+        for (int column =1; column <= tableSize; column++) {
+            for (int row =1; row<=tableSize; row++){
+                sb.append(String.format("%3d |", row * column));
+            }
+            sb.append("\n");
+        }
+        return sb.toString();
     }
 }

TriangleUtilities.java

@@ -3,19 +3,29 @@
 public class TriangleUtilities {
 
     public static String getRow(int numberOfStars) {
-        return null;
+        String stars = "";
+        for (int i =0; i<numberOfStars;i++){
+            stars = stars + "*";
+        } return stars;
     }
     
     public static String getTriangle(int numberOfRows) {
-        return null;
+        String string = "";
+        for (int column = 0; column < numberOfRows; column++){
+            for(int row = 0; row < column + 1; row++){
+                string = string + "*";
+            }
+            string = string + "\n";
+        } 
+        return string;
     }
 
 
     public static String getSmallTriangle() {
-        return null;
+        return getTriangle(4);
     }
 
     public static String getLargeTriangle() {
-        return null;
+        return getTriangle(9);
     }
 }

package.bluej

@@ -1,23 +1,23 @@
 #BlueJ package file
-dependency1.from=NumberUtilitiesTest
-dependency1.to=NumberUtilities
+dependency1.from=TableUtilitiesTest
+dependency1.to=TableUtilities
 dependency1.type=UsesDependency
 dependency2.from=TriangleUtilitiesTest
 dependency2.to=TriangleUtilities
 dependency2.type=UsesDependency
-dependency3.from=TableUtilitiesTest
-dependency3.to=TableUtilities
+dependency3.from=NumberUtilitiesTest
+dependency3.to=NumberUtilities
 dependency3.type=UsesDependency
-editor.fx.0.height=722
-editor.fx.0.width=800
-editor.fx.0.x=537
-editor.fx.0.y=28
-objectbench.height=164
-objectbench.width=484
+editor.fx.0.height=0
+editor.fx.0.width=0
+editor.fx.0.x=0
+editor.fx.0.y=0
+objectbench.height=154
+objectbench.width=468
 package.divider.horizontal=0.6
-package.divider.vertical=0.7560627674750356
-package.editor.height=523
-package.editor.width=382
+package.divider.vertical=0.7556904400606981
+package.editor.height=491
+package.editor.width=378
 package.editor.x=20
 package.editor.y=57
 package.frame.height=759