Loopy Loops

NumberUtilities.java

@@ -1,32 +1,63 @@
- 
-
 
 public class NumberUtilities {
-    
-    public static String getRange(int start) {
-        return null;
+    public static String getRange(int stop) {
+        String range = "";
+
+        for(int i = 0; i < stop; i++)
+            range += i;
+
+        return range;
     }
-    
+
     public static String getRange(int start, int stop) {
-        return null;
-    }
+        String range = "";
+
+        for(int i = start; i < stop; i++) {
+            range += i;
+        }
 
+        return range;
+    }
 
     public static String getRange(int start, int stop, int step) {
-        return null;
+        String range = "";
+
+        for(int i = start; i < stop; i += step) {
+            range += i;
+        }
+
+        return range;
     }
-    
+
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+        String range = "";
+
+        for(int i = start; i < stop; i++) {
+            if((i % 2 == 0)==true) {
+                range +=i;
+            }
+        }
+        return range;
     }
 
-
     public static String getOddNumbers(int start, int stop) {
-        return null;
+        String range = "";
+
+        for(int i = start; i < stop; i++) {
+            if((i % 2 == 0)==false) {
+                range +=i;
+            }
+        }
+        return range;
     }
 
-
     public static String getExponentiations(int start, int stop, int exponent) {
-        return null;
+        String range = "";
+        
+        for(int i = start; i <= stop; i++) {
+            range += (int) Math.pow(i, exponent);
+        }
+        
+        return range;
     }
 }

TableUtilities.java

@@ -2,14 +2,43 @@
 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+        String multTable = "";
+        
+        for (int i = 1; i <= 5; i++) {
+           for (int n = 1; n <= 5; n++) {
+               multTable += String.format("%3d |", i * n);
+            }
+            multTable += "\n";
+        }
+        
+        return multTable;
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+        
+        String multTable = "";
+        
+        for (int i = 1; i <= 10; i++) {
+           for (int n = 1; n <= 10; n++) {
+               multTable += String.format("%3d |", i * n);
+            }
+            multTable += "\n";
+        }
+        
+        return multTable;
+ 
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        String multTable = "";
+        
+        for (int i = 1; i <= tableSize; i++) {
+           for (int n = 1; n <= tableSize; n++) {
+               multTable += String.format("%3d |", i * n);
+            }
+            multTable += "\n";
+        }
+        
+        return multTable;
     }
 }

TriangleUtilities.java

@@ -1,21 +1,31 @@
- 
 
 public class TriangleUtilities {
+    public static String getRow(int width) {
+        String stars = "";
 
-    public static String getRow(int numberOfStars) {
-        return null;
+        for(int i = 0; i < width; i++) {
+            stars += "*";
+        }
+        return stars;
     }
-    
+
     public static String getTriangle(int numberOfRows) {
-        return null;
+        String triangle = "";
+        
+        for (int i = 0; i < numberOfRows; i++) {
+            for(int n = 0; n <= i; n++) {
+                triangle += "*";
+            }
+            triangle += "\n";
+        }       
+        return triangle;
     }
 
-
     public static String getSmallTriangle() {
-        return null;
+        return getTriangle(4);
     }
 
     public static String getLargeTriangle() {
-        return null;
+        return getTriangle(9);
     }
 }

package.bluej

@@ -1,25 +1,25 @@
 #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
+editor.fx.0.height=0
+editor.fx.0.width=0
+editor.fx.0.x=0
+editor.fx.0.y=0
 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.editor.x=376
+package.editor.y=23
 package.frame.height=759
 package.frame.width=508
 package.numDependencies=3