Stars, tables, etc

NumberUtilities.java

@@ -3,30 +3,58 @@
 
 public class NumberUtilities {
     
-    public static String getRange(int start) {
-        return null;
+    public static String getRange(int stop) {
+        String theResult = "";
+        for (int i = 0; i < stop; i++) {
+            theResult += i;
+        }
+        return theResult;
     }
     
     public static String getRange(int start, int stop) {
-        return null;
+        String theResult = "";
+        for (int i = start; i < stop; i++) {
+            theResult += i;
+        }
+        return theResult;
     }
 
 
     public static String getRange(int start, int stop, int step) {
-        return null;
+        String theResult = "";
+        for (int i = start; i < stop; i += step) {
+            theResult += i;
+        }
+        return theResult;
     }
     
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+        String theResult = "";
+        for (int i = start; i < stop; i++) {
+            if (i % 2 == 0) {
+                theResult += i;
+            }
+        }
+        return theResult;
     }
 
 
     public static String getOddNumbers(int start, int stop) {
-        return null;
+        String theResult = "";
+        for (int i = start; i < stop; i++) {
+            if (i % 2 != 0) {
+                theResult += i;
+            }
+        }
+        return theResult;
     }
 
 
     public static String getExponentiations(int start, int stop, int exponent) {
-        return null;
+        String theResult = "";
+        for (int i = start; i <= stop; i++) {
+            theResult += (int) Math.pow(i, exponent);
+        }
+        return theResult;
     }
 }

TableUtilities.java

@@ -1,15 +1,38 @@
- 
 
-public class TableUtilities {
+public class TableUtilities {    
     public static String getSmallMultiplicationTable() {
-        return null;
+        String table = "";
+        for (int i = 1; i <= 5; i++) {
+            for (int j = 1; j <= 5; j++) {
+                table += String.format("%3s |", i*j);
+            }
+            table += "\n";
+        };
+
+        return table;
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+        String table = "";
+        for (int i = 1; i <= 10; i++) {
+            for (int j = 1; j <= 10; j++) {
+                table += String.format("%3s |", i*j);
+            }
+            table += "\n";
+        };
+
+        return table;
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        String table = "";
+        for (int i = 1; i <= tableSize; i++) {
+            for (int j = 1; j <= tableSize; j++) {
+                table += String.format("%3s |", i*j);
+            }
+            table += "\n";
+        };
+
+        return table;
     }
 }

TriangleUtilities.java

@@ -3,19 +3,44 @@
 public class TriangleUtilities {
 
     public static String getRow(int numberOfStars) {
-        return null;
+        String row = "";
+        for (int i = 0; i < numberOfStars; i++) {
+            row += "*";
+        }
+        return row;
     }
     
     public static String getTriangle(int numberOfRows) {
-        return null;
+        String triangle = "";
+        for (int i = 1; i <= numberOfRows; i++) {
+            for (int j = 1; j <= i; j++) {
+                triangle += "*";
+            }
+            triangle += "\n";
+        }
+        return triangle;
     }
 
 
     public static String getSmallTriangle() {
-        return null;
+        String triangle = "";
+        for (int i = 1; i < 5; i++) {
+            for (int j = 1; j <= i; j++) {
+                triangle += "*";
+            }
+            triangle += "\n";
+        }
+        return triangle;
     }
 
     public static String getLargeTriangle() {
-        return null;
+        String triangle = "";
+        for (int i = 1; i < 10; i++) {
+            for (int j = 1; j <= i; j++) {
+                triangle += "*";
+            }
+            triangle += "\n";
+        }
+        return triangle;
     }
 }

package.bluej

@@ -1,22 +1,22 @@
 #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.width=854
+editor.fx.0.x=529
 editor.fx.0.y=28
-objectbench.height=164
+objectbench.height=165
 objectbench.width=484
 package.divider.horizontal=0.6
-package.divider.vertical=0.7560627674750356
-package.editor.height=523
+package.divider.vertical=0.7546362339514978
+package.editor.height=522
 package.editor.width=382
 package.editor.x=20
 package.editor.y=57