Tri Guys

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

@@ -3,26 +3,56 @@
 
 public class NumberUtilities {
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+    StringBuilder evenString = new StringBuilder();
+        if (start % 2 == 0) {
+        for (int i = start; i < stop; i++){
+            evenString.append(i);
+        }
+    }
+        return evenString.toString();
     }
 
 
     public static String getOddNumbers(int start, int stop) {
-        return null;
+        StringBuilder oddString = new StringBuilder();
+        if (start % 2 == 1) {
+            for (int i = start; i < stop; i++){
+                oddString.append(i);
+            }
+        }
+        return oddString.toString();
     }
 
 
     public static String getSquareNumbers(int start, int stop, int step) {
-        return null;
-    }
+        StringBuilder squareString = new StringBuilder();
+
+            for (int i = start; i < stop; i++){
+                squareString.append(i*i);
+            }
+        return squareString.toString();
+        }
+
+
 
 
     public static String getRange(int start, int stop, int step) {
-        return null;
-    }
+    StringBuilder range = new StringBuilder();
 
+            for (int i = start; i<stop; i++) {
+                range.append(i);
+            } return range.toString();
+    }
+// must add to.String to range bc you made a string builder
 
     public static String getExponentiations(int start, int stop, int step, int exponent) {
-        return null;
+
+        StringBuilder exponentString = new StringBuilder();
+
+        for (int i = start; i < stop-1; i += step){
+            exponentString.append(Math.pow(i,exponent));
+        }
+        return exponentString.toString();
+
     }
 }

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

@@ -2,14 +2,48 @@
 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+
+        StringBuilder tableOne = new StringBuilder();
+
+        for (int a = 1; a <= 5; a++){
+            for (int b = 1; b <= 5; b++){
+                int product = a * b;
+                tableOne.append(String.format("%3d |", product));
+            }
+            tableOne.append("\n");
+
+        }
+        return tableOne.toString();
     }
 
+
     public static String getLargeMultiplicationTable() {
-        return null;
+
+        StringBuilder tableOne = new StringBuilder();
+
+        for (int a = 1; a <= 10; a++){
+            for (int b = 1; b <= 10; b++){
+                int product = a * b;
+                tableOne.append(String.format("%3d |", product));
+            }
+            tableOne.append("\n");
+
+        }
+        return tableOne.toString();
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+
+        StringBuilder tableOne = new StringBuilder();
+
+        for (int a = 1; a <= tableSize; a++){
+            for (int b = 1; b <= tableSize; b++){
+                int product = a * b;
+                tableOne.append(String.format("%3d |", product));
+            }
+            tableOne.append("\n");
+
+        }
+        return tableOne.toString();
     }
 }

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

@@ -3,18 +3,60 @@
 public class TriangleUtilities {
 
     public static String getTriangle(int numberOfRows) {
-        return null;
+        System.out.println("Get Triangle");
+        String resultString = "";
+        System.out.println(resultString);
+        for (int i = 1; i < numberOfRows; i++){
+
+            String rowofStars = "";
+            for (int j = 0; j < i; j++){
+                rowofStars = rowofStars + "*";
+
+            }
+            resultString = resultString + rowofStars + "\n";
+        }
+
+        return resultString;
     }
 
     public static String getRow(int numberOfStars) {
-        return null;
+        System.out.println("Get Row");
+        String resultString = "";
+       for (int i = 0; i < numberOfStars; i++){
+           resultString = resultString + "*";
+       }
+       return resultString;
     }
 
     public static String getSmallTriangle() {
-        return null;
+        System.out.println("Get Small Triangle");
+        String resultString = "";
+        System.out.println(resultString);
+        for (int i = 1; i < 5; i++){
+            String rowofStars = "";
+            for (int j = 0; j < i; j++){
+                rowofStars = rowofStars + "*";
+
+            }
+            resultString = resultString + rowofStars + "\n";
+        }
+
+        return resultString;
     }
 
     public static String getLargeTriangle() {
-        return null;
+        System.out.println("Get Large Triangle");
+        String resultString = "";
+        System.out.println(resultString);
+        for (int i = 1; i < 10; i++){
+            String rowofStars = "";
+            for (int j = 0; j < i; j++){
+                rowofStars = rowofStars + "*";
+
+            }
+            resultString = resultString + rowofStars + "\n";
+        }
+
+        return resultString;
     }
 }

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

@@ -51,7 +51,7 @@ public void testGetRange2() {
     @Test
     public void testGetEvenNumbers() {
         // : Given
-        String expected = "5791113151719";
+        String expected = "681012141618";
         int start = 5;
         int stop = 20;
 
@@ -65,7 +65,7 @@ public void testGetEvenNumbers() {
     @Test
     public void testGetOddNumbers() {
         // : Given
-        String expected = "681012141618";
+        String expected = "5791113151719";
         int start = 5;
         int stop = 20;
         int step = 5;