Tryin those angles

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

@@ -1,28 +1,77 @@
 package io.zipcoder.microlabs.mastering_loops;
 
+import java.util.ArrayList;
 
 public class NumberUtilities {
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+
+        StringBuilder evens = new StringBuilder();
+
+        while (start < stop) {
+            if (start % 2 == 0){
+                evens.append("" + start);
+        }
+            start++;
+        }
+
+        return evens.toString();
     }
 
 
     public static String getOddNumbers(int start, int stop) {
-        return null;
+
+        StringBuilder odds = new StringBuilder();
+
+        while (start < stop) {
+            if (start % 2 == 1){
+                odds.append("" + start);
+            }
+            start++;
+        }
+
+        return odds.toString();
+
     }
 
 
     public static String getSquareNumbers(int start, int stop, int step) {
-        return null;
+
+    StringBuilder sqNums = new StringBuilder();
+
+      for (int i = start; i < stop; i+= step){
+          sqNums.append((long)Math.pow(i , 2));
+      }
+
+      return sqNums.toString();
+
     }
 
 
     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;
+
+        //int start = 5;
+        //int stop = 20;
+        //int step = 5;
+        //int exponent = 2;
+
+        StringBuilder expo = new StringBuilder();
+
+        for (int i = start; i < stop; i+= step){
+            expo.append((long)Math.pow(i , exponent));
+        }
+
+        return expo.toString();
     }
 }

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

@@ -2,14 +2,45 @@
 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+
+        StringBuilder tree = new StringBuilder();
+
+        for (int i = 1; i <= 5; i++) {
+            for (int j = 1; j <= 5; j++) {
+                tree.append(String.format("%3d |", (i*j)));
+
+            }
+            tree.append("\n");
+        }
+        return tree.toString();
+
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+
+        StringBuilder tree = new StringBuilder();
+
+        for (int i = 1; i <= 10; i++) {
+            for (int j = 1; j <= 10; j++) {
+                tree.append(String.format("%3d |", (i*j)));
+
+            }
+            tree.append("\n");
+        }
+        return tree.toString();
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+
+        StringBuilder tree = new StringBuilder();
+
+        for (int i = 1; i <= tableSize; i++) {
+            for (int j = 1; j <= tableSize; j++) {
+                tree.append(String.format("%3d |", (i*j)));
+
+            }
+            tree.append("\n");
+        }
+        return tree.toString();
     }
 }

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

@@ -3,18 +3,56 @@
 public class TriangleUtilities {
 
     public static String getTriangle(int numberOfRows) {
-        return null;
+
+        StringBuilder Tree = new StringBuilder();
+
+        for (int i = 1; i < numberOfRows; i++) {
+            for (int j = 0; j < i; j++) {
+                Tree.append("*");
+            }
+            Tree.append("\n");
+        }
+
+        return Tree.toString();
+
     }
 
     public static String getRow(int numberOfStars) {
-        return null;
+
+        StringBuilder row = new StringBuilder();
+
+        for (int i = 1; i <= numberOfStars; i++ ){
+            row.append("*");
+        }
+
+        return row.toString();
     }
 
     public static String getSmallTriangle() {
-        return null;
+
+        StringBuilder smallTree = new StringBuilder();
+
+        for (int i = 1; i < 5; i++) {
+            for (int j = 0; j < i; j++) {
+                smallTree.append("*");
+            }
+            smallTree.append("\n");
+        }
+
+        return smallTree.toString();
     }
 
     public static String getLargeTriangle() {
-        return null;
+
+        StringBuilder largeTree = new StringBuilder();
+
+        for (int i = 1; i < 10; i++) {
+            for (int j = 0; j < i; j++) {
+                largeTree.append("*");
+            }
+            largeTree.append("\n");
+        }
+
+        return largeTree.toString();
     }
 }

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

@@ -35,23 +35,10 @@ public void testGetRange2() {
         Assert.assertEquals(expected, actual);
     }
 
-
-
-
-
-
-
-
-
-
-
-
-
-
     @Test
     public void testGetEvenNumbers() {
         // : Given
-        String expected = "5791113151719";
+        String expected = "681012141618";
         int start = 5;
         int stop = 20;
 
@@ -65,7 +52,7 @@ public void testGetEvenNumbers() {
     @Test
     public void testGetOddNumbers() {
         // : Given
-        String expected = "681012141618";
+        String expected = "5791113151719";
         int start = 5;
         int stop = 20;
         int step = 5;