Merge 38ad53ef6ab553c7d9bcb30c0c15a30018fc7e9b into 24118cb7b3c6ce6a0b3be331c7987add797baa81

src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java

@@ -3,17 +3,30 @@ package io.zipcoder.microlabs.mastering_loops;
 
 public class NumberUtilities {
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+git
+        StringBuilder evensOnly = new StringBuilder();
+        for(int i = start; i <= stop; i++) {
+            if(i % 2 == 0) {
+                evensOnly.append(i);
+            }
+        }
+        return evensOnly.toString();
     }
 
 
     public static String getOddNumbers(int start, int stop) {
-        return null;
+        StringBuilder oddsOnly = new StringBuilder();
+        for(int i = start; i <= stop; i++) {
+            if(i % 2 != 0) {
+                oddsOnly.append(i);
+            }
+        }
+        return oddsOnly.toString();
     }
 
 
     public static String getSquareNumbers(int start, int stop, int step) {
-        return null;
+        return getExponentiations(start, stop, step, 2);
     }
 
     public static String getRange(int start) {
@@ -26,11 +39,19 @@ public class NumberUtilities {
 
 
     public static String getRange(int start, int stop, int step) {
-        return null;
+        StringBuilder range = new StringBuilder();
+        for(int i = start; i < stop; i += step) {
+            range.append(i);
+        }
+        return range.toString();
     }
 
 
     public static String getExponentiations(int start, int stop, int step, int exponent) {
-        return null;
+        StringBuilder exponentials = new StringBuilder();
+        for(int i = start; i < stop; i += step) {
+            exponentials.append((int)Math.pow(i, exponent));
+        }
+        return exponentials.toString();
     }
 }

src/main/java/io/zipcoder/microlabs/mastering_loops/TableUtilities.java

@@ -2,14 +2,22 @@ package io.zipcoder.microlabs.mastering_loops;
 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+        return getMultiplicationTable(5);
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+        return getMultiplicationTable(10);
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        StringBuilder table = new StringBuilder();
+        for(int i = 1; i < tableSize + 1; ++i) {
+            for(int j = 1; j < tableSize + 1; ++j) {
+                String row = String.format("%3d |", i * j);
+                table.append(row);
+            }
+            table.append("\n");
+        }
+        return table.toString();
     }
 }

src/main/java/io/zipcoder/microlabs/mastering_loops/TriangleUtilities.java

@@ -3,18 +3,27 @@ package io.zipcoder.microlabs.mastering_loops;
 public class TriangleUtilities {
 
     public static String getTriangle(int numberOfRows) {
-        return null;
+        StringBuilder triangle = new StringBuilder();
+        for (int i = 1; i < numberOfRows; i++) {
+            triangle.append(getRow(i));
+            triangle.append("\n");
+        }
+        return triangle.toString();
     }
 
     public static String getRow(int numberOfStars) {
-        return null;
+        StringBuilder rowOfStars = new StringBuilder();
+        for (int i = 0; i < numberOfStars; i++) {
+            rowOfStars.append("*");
+        }
+        return rowOfStars.toString();
     }
 
     public static String getSmallTriangle() {
-        return null;
+        return getTriangle(5);
     }
 
     public static String getLargeTriangle() {
-        return null;
+        return getTriangle(10);
     }
 }

src/test/java/io/zipcoder/microlabs/mastering_loops/NumberUtilitiesTest.java

@@ -173,7 +173,7 @@ public class NumberUtilitiesTest {
     @Test
     public void testGetEvenNumbers() {
         // : Given
-        String expected = "5791113151719";
+        String expected = "68101214161820";
         int start = 5;
         int stop = 20;
 
@@ -187,7 +187,7 @@ public class NumberUtilitiesTest {
     @Test
     public void testGetOddNumbers() {
         // : Given
-        String expected = "681012141618";
+        String expected = "5791113151719";
         int start = 5;
         int stop = 20;
         int step = 5;

src/test/java/io/zipcoder/microlabs/mastering_loops/TriangleUtilitiesTest.java

@@ -18,7 +18,7 @@ public class TriangleUtilitiesTest {
     @Test
     public void getTriangleTest1() {
         String expected =
-                "*\n" +
+                        "*\n" +
                         "**\n" +
                         "***\n" +
                         "****\n" +