NumberUtilities.java

@@ -4,29 +4,63 @@
 public class NumberUtilities {
     
     public static String getRange(int start) {
-        return null;
+        StringBuilder builder = new StringBuilder();
+        for(int i = 0; i < start;i++){
+            builder.append(i);
+        }
+        return ""+builder;
     }
     
     public static String getRange(int start, int stop) {
-        return null;
+        StringBuilder builder = new StringBuilder();
+        for(int i = start; i < stop; i++){
+        builder.append(i);
+        }
+        return ""+builder;
     }
 
 
     public static String getRange(int start, int stop, int step) {
-        return null;
+        StringBuilder builder = new StringBuilder();
+        
+        for(int i = start; i < stop; i+= step){
+            builder.append(i);
+        }
+        return ""+builder;
     }
     
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+        StringBuilder builder = new StringBuilder();
+        for(int i = start; i<stop;i++){
+              if((i % 2) == 0){
+            builder.append(i);
+        }
+        }
+        
+        return "" + builder;
     }
 
 
     public static String getOddNumbers(int start, int stop) {
-        return null;
+        StringBuilder builder = new StringBuilder();
+        for(int i = start; i < stop; i++){
+                if((i % 2) != 0){
+            builder.append(i);
+        }
+        
+        }
+        return "" + builder;
     }
 
 
     public static String getExponentiations(int start, int stop, int exponent) {
-        return null;
+        StringBuilder builder = new StringBuilder();
+        for(int i = start;i <= stop;i++){
+            int power = (int)Math.pow(i,exponent);
+            builder.append(power);
+        }
+    return "" + builder;
     }
+         
+    
 }

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 builder = new StringBuilder();
+        for(int i = 1;i <=tableSize;i++){
+            for(int j = 1; j <=tableSize;j++){
+            builder.append(String.format("%3d |",i*j));
+        }
+        builder.append("\n");
+    }
+        return builder.toString();
     }
 }

TriangleUtilities.java

@@ -3,19 +3,29 @@
 public class TriangleUtilities {
 
     public static String getRow(int numberOfStars) {
-        return null;
+        StringBuilder builder = new StringBuilder();
+        for(int i = 1;i<= numberOfStars;i++){
+           builder.append("*");
+        }
+        return builder.toString();
     }
     
     public static String getTriangle(int numberOfRows) {
-        return null;
+        StringBuilder builder = new StringBuilder();
+           for(int i = 1; i <= numberOfRows; i++){
+               String answer = getRow(i);
+               builder.append(answer + "\n");
+            }
+        return builder.toString();
     }
 
 
     public static String getSmallTriangle() {
-        return null;
+        return getTriangle(4);
     }
 
     public static String getLargeTriangle() {
-        return null;
+       
+        return getTriangle(9);
     }
 }

package.bluej

@@ -1,27 +1,27 @@
 #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
-package.divider.horizontal=0.6
-package.divider.vertical=0.7560627674750356
-package.editor.height=523
-package.editor.width=382
-package.editor.x=20
-package.editor.y=57
-package.frame.height=759
-package.frame.width=508
+editor.fx.0.height=800
+editor.fx.0.width=1280
+editor.fx.0.x=0
+editor.fx.0.y=0
+objectbench.height=156
+objectbench.width=352
+package.divider.horizontal=0.5780998389694042
+package.divider.vertical=0.7496159754224271
+package.editor.height=481
+package.editor.width=515
+package.editor.x=0
+package.editor.y=23
+package.frame.height=709
+package.frame.width=641
 package.numDependencies=3
 package.numTargets=6
 package.showExtends=true