finished commit

NumberUtilities.java

@@ -1,32 +1,55 @@
- 
-
 
 public class NumberUtilities {
-    
     public static String getRange(int start) {
-        return null;
+        String range = "";
+        for(int i=0; i<start; 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;
+        //start = (start % 2 == 1) ? start + 1 : start;
+        
+        if (start % 2 == 0) {
+            return getRange(start, stop, 2);
+        } else {
+            return getRange(start + 1, stop, 2);
+        }
     }
 
-
     public static String getOddNumbers(int start, int stop) {
-        return null;
+        start = (start % 2 == 0) ? start + 1 : start;
+            return getRange(start, stop, 2);
     }
 
-
     public static String getExponentiations(int start, int stop, int exponent) {
-        return null;
+        
+        String range = "";
+        
+        for(int i=start; i<stop + 1; i++) {
+            range += (int)Math.pow(i, exponent);
+        }
+        return range;
     }
 }

TableUtilities.java

@@ -1,15 +1,23 @@
- 
 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+        return getMultiplicationTable(5);
     }
 
-    public static String getLargeMultiplicationTable() {
-        return null;
-    }
+        public static String getLargeMultiplicationTable() {
+            return getMultiplicationTable(10);
+        }
 
-    public static String getMultiplicationTable(int tableSize) {
-        return null;
+        public static String getMultiplicationTable(int tableSize) {
+        StringBuilder multTable = new StringBuilder();
+        
+        for(int i=1; i<=tableSize; i++){
+            for(int j=1; j<=tableSize; j++){
+                String number = String.format("%3d |", j*i);
+                multTable.append(number);
+            }
+            multTable.append("\n");        
+        }
+        return multTable.toString();
     }
 }

TriangleUtilities.java

@@ -3,19 +3,32 @@
 public class TriangleUtilities {
 
     public static String getRow(int numberOfStars) {
-        return null;
+        String newRow = "";
+        
+        for(int i=0; i<numberOfStars; i++){
+            newRow += '*';
+        }
+        return newRow;
     }
     
     public static String getTriangle(int numberOfRows) {
-        return null;
+        String triangle = "";
+        
+        for(int i=0; i<numberOfRows; i++){
+            triangle += getRow(i+1);
+            triangle += "\n";
+        }
+        return triangle;
     }
 
 
     public static String getSmallTriangle() {
-        return null;
+ 
+        
+        return getTriangle(4);
     }
 
     public static String getLargeTriangle() {
-        return null;
+        return getTriangle(9);
     }
 }