added a bunch of methods to this lab

NumberUtilities.java

@@ -1,32 +1,76 @@
- 
-
+import java.util.*; 
 
 public class NumberUtilities {
-    
-    public static String getRange(int start) {
-        return null;
+    public static String getRange(int stop) {
+        String numRange = "";
+        for (int i=0; i<stop; i++) {
+            numRange += String.valueOf(i);
+        }
+        return numRange;
+
     }
-    
+
     public static String getRange(int start, int stop) {
-        return null;
+        String specNumRange = "";
+        for (int i=start; i<stop; i++) {
+            specNumRange += String.valueOf(i);
+        }
+        return specNumRange;
     }
 
-
     public static String getRange(int start, int stop, int step) {
-        return null;
+        String stepNumRange = "";
+        for (int i=start; i<stop; i+=step) {
+            stepNumRange += String.valueOf(i);
+        }
+        return stepNumRange;
     }
-    
+
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+        String evenNumRange = "";
+        if (start%2 != 0) {
+        start += 1;
+        }
+        for (int i=start; i<stop; i+=2) {
+            evenNumRange += String.valueOf(i);
+        }
+        return evenNumRange;
     }
 
-
     public static String getOddNumbers(int start, int stop) {
-        return null;
+        String oddNumRange = "";
+        if (start%2 == 0) {
+        start += 1;
+        }
+        for (int i=start; i<stop; i+=2) {
+            oddNumRange += String.valueOf(i);
+        }
+        return oddNumRange;
     }
 
-
+    public static String getSquareNumbers(int start, int stop) {
+        String squareNumRange = "";
+        for (int i=start; i<stop; i++) {
+            squareNumRange += String.valueOf(i*i);
+        }
+        return squareNumRange;
+    }
+    
     public static String getExponentiations(int start, int stop, int exponent) {
-        return null;
+       return getExponentiationsWithStep(start, stop, 1, exponent);
+    }
+    
+    // getExponentiationsWithStep 
+    public static String getExponentiationsWithStep(int start, int stop, int step, int exponent) {
+        String exNumRange = "";
+        int exponentialNum = start;
+        int result = 0;
+        for (int i=start; i<=stop; i+=step) {
+            result = (int)Math.pow(i,exponent);
+            //System.out.println(result);
+            
+            exNumRange += String.valueOf(result);
+        }
+        return exNumRange;
     }
 }

NumberUtilitiesTest.java

@@ -1,10 +1,9 @@
- 
 
 import org.junit.Assert;
 import org.junit.Test;
 
 public class NumberUtilitiesTest {
-    
+
     @Test
     public void testGetRangeForSmallRange() {
         // : Given
@@ -17,8 +16,7 @@ public class NumberUtilitiesTest {
         // : Then
         Assert.assertEquals(expected, actual);
     }
-    
-    
+
     @Test
     public void testGetRangeToTwoDigits() {
         // : Given
@@ -60,7 +58,6 @@ public class NumberUtilitiesTest {
         Assert.assertEquals(expected, actual);
     }
 
-    
     @Test
     public void testGetRangeWithOneStep() {
         // : Given
@@ -76,7 +73,6 @@ public class NumberUtilitiesTest {
         Assert.assertEquals(expected, actual);
     }
 
-
     @Test
     public void testGetRangeWithTwoStep() {
         // : Given
@@ -92,7 +88,7 @@ public class NumberUtilitiesTest {
         Assert.assertEquals(expected, actual);
     }
 
-        @Test
+    @Test
     public void testGetRangeWithFiveStep() {
         // : Given
         String expected = "51015";
@@ -107,7 +103,6 @@ public class NumberUtilitiesTest {
         Assert.assertEquals(expected, actual);
     }
 
-    
     @Test
     public void testGetEvenNumbersStartAndEndAtEven() {
         // : Given
@@ -122,7 +117,6 @@ public class NumberUtilitiesTest {
         Assert.assertEquals(expected, actual);
     }
 
-    
     @Test
     public void testGetEvenNumbersStartAndEndAtOdd() {
         // : Given
@@ -137,7 +131,6 @@ public class NumberUtilitiesTest {
         Assert.assertEquals(expected, actual);
     }
 
-    
     @Test
     public void testGetOddNumbersStartAndEndAtOdd() {
         // : Given
@@ -165,7 +158,6 @@ public class NumberUtilitiesTest {
         Assert.assertEquals(expected, actual);
     }
 
-
     @Test
     public void testGetExponentiationNumbersForSquare() {
         // : Given
@@ -180,8 +172,22 @@ public class NumberUtilitiesTest {
         // : Then
         Assert.assertEquals(expected, actual);
     }
-    
-    
+
+    @Test
+    public void testReadMe(){
+        String expected = "25100225400";
+        int start = 5;
+        int stop = 20;
+        int step = 5;
+        int exponent = 2;
+
+        // : When
+        String actual = NumberUtilities.getExponentiationsWithStep(start, stop, step, exponent);
+
+        // : Then
+        Assert.assertEquals(expected, actual);
+    }
+
     @Test
     public void testGetExponentiationNumbersForCube() {
         // : Given
@@ -196,4 +202,11 @@ public class NumberUtilitiesTest {
         // : Then
         Assert.assertEquals(expected, actual);
     }
+
+    @Test
+    public void testGetSquareNumbers()
+    {
+        Assert.assertEquals("1491625", NumberUtilities.getSquareNumbers(1, 6));
+    }
 }
+

TableUtilities.java

@@ -2,14 +2,39 @@
 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+        String sumOf = "";
+        for (int i=1; i<=5; i++){
+        for (int b=1; b<=5; b++){
+            sumOf += String.format( "%3d |", b*i);
+        }
+        sumOf += "\n";
+        }
+        
+        return sumOf;
     }
+    
 
     public static String getLargeMultiplicationTable() {
-        return null;
+        String sumOf = "";
+        for (int i=1; i<=10; i++){
+        for (int b=1; b<=10; b++){
+            sumOf += String.format( "%3d |", b*i);
+        }
+        sumOf += "\n";
+        }
+        
+        return sumOf;
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        String sumOf = "";
+        for (int i=1; i<=tableSize; i++){
+        for (int b=1; b<=tableSize; b++){
+            sumOf += String.format( "%3d |", b*i);
+        }
+        sumOf += "\n";
+        }
+        
+        return sumOf;
     }
 }

TriangleUtilities.java

@@ -1,21 +1,36 @@
- 
+import java.io.*;
+import java.util.*;
+import java.lang.*;
 
 public class TriangleUtilities {
-
-    public static String getRow(int numberOfStars) {
-        return null;
+    public static String getRow(int width) {
+        String stars = "";
+        for (int i=0; i<width; i++) {
+            stars += "*";
+        }
+        return stars;
     }
-    
+
     public static String getTriangle(int numberOfRows) {
-        return null;
-    }
+        String stars = "";
+
+        for (int i=0; i<numberOfRows; i++) {
 
+            for (int b=0; b<=i; b++) {
+                stars += "*";
+
+            }
+            stars+= "\n";
+        }
+
+        return stars;
+    }
 
     public static String getSmallTriangle() {
-        return null;
+        return getTriangle(4);
     }
 
     public static String getLargeTriangle() {
-        return null;
+        return getTriangle(9);
     }
 }