works works

NumberUtilities.java

- 
 
 
 public class NumberUtilities {
-    
+
     public static String getRange(int start) {
-        return null;
+
+        String concatloops = "";
+
+        for (int i=0; i < start; i++) {
+            concatloops += "" + i;
+        }
+
+        return concatloops;
     }
-    
+
     public static String getRange(int start, int stop) {
-        return null;
-    }
+        String concatloops = "";
 
+        while (start < stop) {
+            concatloops += "" + start;
+            start++;
+        };
+
+        return concatloops;
+    }
 
     public static String getRange(int start, int stop, int step) {
-        return null;
+        int num = start;
+        String concatloops = "";
+
+        while (num < stop) {
+            concatloops += "" + num;
+            num = num + step;
+        }
+
+        return concatloops;
     }
-    
+
     public static String getEvenNumbers(int start, int stop) {
-        return null;
-    }
+        String concatloops = "";
 
+        while (start < stop) {
 
-    public static String getOddNumbers(int start, int stop) {
-        return null;
+            if ((start % 2) == 0) {
+                concatloops += "" + start; }
+
+            start++;
+        };
+        return concatloops;
     }
 
+    public static String getOddNumbers(int start, int stop) {
+        String concatloops = "";
+
+        while (start < stop) {
+
+            if ((start % 2) != 0) {
+                concatloops += "" + start; }
+
+            start++;
+        };
+        return concatloops;
+    }
 
     public static String getExponentiations(int start, int stop, int exponent) {
-        return null;
+        int counter = start;
+        double num = start;
+        String concatloops = "";
+
+        while (counter <= stop) {
+        num = Math.pow(counter, exponent);
+        concatloops += "" + (int)num;
+        counter++;
+                    }
+
+        System.out.println(concatloops);
+
+        return concatloops;
     }
 }

TableUtilities.java

- 
 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+        int length = 5;
+        int width = 5;
+        int counter = 1;
+        String output = "";
+
+        for (int i = 1; i <= length; i++) {
+
+            for (int y = 1; y <= width; y++) {
+                output += String.format("%3d", (y * counter)) + " |"; 
+            }
+
+            counter++;
+            output = output + System.getProperty("line.separator");
+        }
+        return output;
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+        int length = 10;
+        int width = 10;
+        int counter = 1;
+        String output = "";
+
+        for (int i = 1; i <= length; i++) {
+
+            for (int y = 1; y <= width; y++) {
+                output += String.format("%3d", (y * counter)) + " |"; 
+            }
+
+            counter++;
+            output = output + System.getProperty("line.separator");
+        }
+        return output;
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        int counter = 1;
+        String output = "";
+        for (int i = 1; i <= tableSize; i++) {
+
+            for (int y = 1; y <= tableSize; y++) {
+                output += String.format("%3d", (y * counter)) + " |"; 
+            }
+
+            counter++;
+            output = output + System.getProperty("line.separator");
+        }
+        return output;
     }
 }

TriangleUtilities.java

 public class TriangleUtilities {
 
     public static String getRow(int numberOfStars) {
-        return null;
+    int counter = 1;
+    String triangle = "";
+    String add = "*";
+
+    for (int i = 1; i <= numberOfStars; i++){
+     triangle = triangle + add;
+    }
+    return triangle;
     }
     
     public static String getTriangle(int numberOfRows) {
-        return null;
+    int counter = 1;
+    String triangle = "";
+    String add = "*";
+
+    for (int i = 1; i <= numberOfRows; i++){
+
+     for (int y = 1; y <= counter; y++){
+     triangle = triangle + add;
+      }
+      counter++;
+     triangle = triangle + System.getProperty("line.separator");
+    }
+    return triangle;
     }
 
 
     public static String getSmallTriangle() {
-        return null;
+    int width = 4;
+    int counter = 1;
+    String triangle = "";
+    String add = "*";
+
+    for (int i = 1; i <= width; i++){
+
+     for (int y = 1; y <= counter; y++){
+     triangle = triangle + add;
+      }
+      counter++;
+     triangle = triangle + System.getProperty("line.separator");
+    }
+    return triangle;
     }
 
     public static String getLargeTriangle() {
-        return null;
+    int width = 9;
+    int counter = 1;
+    String triangle = "";
+    String add = "*";
+
+    for (int i = 1; i <= width; i++){
+
+     for (int y = 1; y <= counter; y++){
+     triangle = triangle + add;
+      }
+      counter++;
+     triangle = triangle + System.getProperty("line.separator");
+    }
+    return triangle;
     }
 }