NumbersTrianglesTables Sandy Setiawan

NumberUtilities.java

@@ -4,29 +4,55 @@
 public class NumberUtilities {
 
     public static String getRange(int stop) {
-        return null;
+        String result = "";
+        for (int i = 0; i < stop; i++) {
+            result += i;
+        }
+        return result;
     }
 
     public static String getRange(int start, int stop) {
-        return null;
+        String result2 = "";
+        for (int i = start; i < stop; i++) {
+            result2 += i;
+        }
+        return result2;
     }
 
 
     public static String getRange(int start, int stop, int step) {
-        return null;
+       String result3 = "";
+        for (int i = start; i < stop; i = i + step) {
+            result3 += i;
+        }
+        return result3;
     }
 
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+        String result4 = "";
+        for (int i = start; i < stop; i++) {
+            if(i % 2 == 0) {
+            result4 += i;
+        }
     }
-
-
+        return result4;
+    }
+
     public static String getOddNumbers(int start, int stop) {
-        return null;
+        String result5 = "";
+        for (int i = start; i < stop; i++) {
+            if(i % 2 == 1) {
+                result5 +=i;
+            }
     }
-
-
-    public static String getExponentiations(int start, int stop, int exponent) {
-        return null;
+return result5;
+}
+public static String getExponentiations(int start, int stop, int exponent) {
+        String result6 = "";
+        for (int i = start; i <= stop; i++)  {
+
+            result6 +=(int)Math.pow(i, exponent);
     }
+    return result6;
+}
 }

TableUtilities.java

@@ -2,14 +2,40 @@
 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+        int x = 5;
+        String result1 = getMultiplicationTable(x);
+        return result1;
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+        int y = 10;
+        String result2 = getMultiplicationTable(y);
+        return result2;
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        String result = "";
+        for (int i=1; i <= tableSize; i++) {
+            for (int j=1; j <= tableSize; j++) {
+                int product = i * j;
+                if (product <10)
+                {
+                    result += "  " + product + " |";
+                }
+                else if ( product < 100 && product > 9)
+                {
+                    result += " " + product + " |";
+                }
+                else
+                {
+                   result += "" + product + " |"; 
+                }
+            }
+            result += "\n";
+            }    
+
+        return result;
     }
-}
+
+  }
+

TriangleUtilities.java

@@ -3,19 +3,37 @@
 public class TriangleUtilities {
 
     public static String getRow(int numberOfStars) {
-        return null;
+        String result = "";
+        for(int i = 1; i <= numberOfStars; i++) {
+        result += "*";
     }
+    return result;
+}
 
-    public static String getTriangle(int numberOfRows) {
-        return null;
+public static String getTriangle(int numberOfRows) {
+     String result2 = ""; 
+     for(int i = 1; i <= numberOfRows; i++) 
+     {
+      result2 += getRow(i) + "\n" ; 
     }
-
+    return result2;
+}
 
     public static String getSmallTriangle() {
-        return null;
+        String result3 ="";
+        for(int i = 1; i <= 4; i++)
+        {
+         result3 += getRow(i) + "\n"; 
+        }
+        return result3;
     }
 
     public static String getLargeTriangle() {
-        return null;
+        String result4 ="";
+        for(int i = 1; i <= 9; i++)
+        {
+         result4 += getRow(i) + "\n"; 
+        }
+        return result4;
     }
 }

package.bluej

@@ -10,17 +10,17 @@ dependency3.to=TableUtilities
 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
+editor.fx.0.x=523
+editor.fx.0.y=66
+objectbench.height=179
 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.divider.vertical=0.7223880597014926
+package.editor.height=477
+package.editor.width=390
+package.editor.x=100
+package.editor.y=24
+package.frame.height=728
 package.frame.width=508
 package.numDependencies=3
 package.numTargets=6
@@ -61,14 +61,14 @@ target4.showInterface=false
 target4.type=ClassTarget
 target4.width=120
 target4.x=80
-target4.y=70
+target4.y=50
 target5.height=50
 target5.name=NumberUtilitiesTest
 target5.showInterface=false
 target5.type=UnitTestTargetJunit4
 target5.width=120
 target5.x=110
-target5.y=40
+target5.y=20
 target6.association=TriangleUtilitiesTest
 target6.height=50
 target6.name=TriangleUtilities