Merge 92aee78fc9c49be6801c3e623585706ac9a45fb1 into 24118cb7b3c6ce6a0b3be331c7987add797baa81

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

@@ -3,17 +3,32 @@ package io.zipcoder.microlabs.mastering_loops;
 
 public class NumberUtilities {
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+        StringBuilder answer = new StringBuilder();
+
+        for (int i = start%2 == 1 ? start+1 : start; i < stop; i = i +2){
+            answer.append(i);
+        }
+        return answer.toString();
     }
 
 
     public static String getOddNumbers(int start, int stop) {
-        return null;
+        StringBuilder answer = new StringBuilder();
+
+        for (int i = start%2 == 0 ? start+1 : start; i < stop; i = i +2){
+            answer.append(i);
+        }
+        return answer.toString();
     }
 
 
     public static String getSquareNumbers(int start, int stop, int step) {
-        return null;
+        StringBuilder answer = new StringBuilder();
+
+        for (int i = start; i < stop; i = i +step){
+            answer.append(i*i);
+        }
+        return answer.toString();
     }
 
     public static String getRange(int start) {
@@ -26,11 +41,21 @@ public class NumberUtilities {
 
 
     public static String getRange(int start, int stop, int step) {
-        return null;
+        StringBuilder answer = new StringBuilder();
+
+        for (int i = start; i < stop; i = i +step){
+            answer.append(i);
+        }
+        return answer.toString();
     }
 
 
     public static String getExponentiations(int start, int stop, int step, int exponent) {
-        return null;
+        StringBuilder answer = new StringBuilder();
+
+        for (int i = start; i < stop; i = i +step){
+            answer.append((int) Math.pow(i,exponent));
+        }
+        return answer.toString();
     }
 }

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

@@ -2,14 +2,74 @@ package io.zipcoder.microlabs.mastering_loops;
 
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+        StringBuilder answer = new StringBuilder();
+
+        int columnCounter = 1;
+        int rowCounter = 1;
+        int input = 1;
+        for (int i = 1; i<= 25; i++){
+
+            String cell = String.format("%3d |", input);
+            answer.append(cell);
+            columnCounter++;
+            input = rowCounter*columnCounter;
+            if (columnCounter == 6){
+                answer.append("\n");
+                columnCounter = 1;
+                rowCounter++;
+                input = rowCounter;
+
+            }
+        }
+
+        return answer.toString();
     }
 
     public static String getLargeMultiplicationTable() {
-        return null;
+        StringBuilder answer = new StringBuilder();
+
+        int columnCounter = 1;
+        int rowCounter = 1;
+        int input = 1;
+        for (int i = 1; i<= 100; i++){
+
+            String cell = String.format("%3d |", input);
+            answer.append(cell);
+            columnCounter++;
+            input = rowCounter*columnCounter;
+            if (columnCounter == 11){
+                answer.append("\n");
+                columnCounter = 1;
+                rowCounter++;
+                input = rowCounter;
+
+            }
+        }
+
+        return answer.toString();
     }
 
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        StringBuilder answer = new StringBuilder();
+
+        int columnCounter = 1;
+        int rowCounter = 1;
+        int input = 1;
+        for (int i = 1; i<= tableSize*tableSize; i++){
+
+            String cell = String.format("%3d |", input);
+            answer.append(cell);
+            columnCounter++;
+            input = rowCounter*columnCounter;
+            if (columnCounter == tableSize+1){
+                answer.append("\n");
+                columnCounter = 1;
+                rowCounter++;
+                input = rowCounter;
+
+            }
+        }
+
+        return answer.toString();
     }
 }

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

@@ -3,18 +3,61 @@ package io.zipcoder.microlabs.mastering_loops;
 public class TriangleUtilities {
 
     public static String getTriangle(int numberOfRows) {
-        return null;
+        StringBuilder answer = new StringBuilder();
+        int rowCounter = 1;
+        for(int i = 1; i<= numberOfRows-1; i++){
+            for(int j = 1; j<=rowCounter; j++) {
+                answer.append("*");
+                if (j == rowCounter) {
+                    answer.append("\n");
+                    rowCounter++;
+                    break;
+                }
+            }
+        }
+        return answer.toString();
     }
 
     public static String getRow(int numberOfStars) {
-        return null;
+        StringBuilder answer = new StringBuilder();
+        for(int i = 1; i<= numberOfStars; i++){
+            answer.append("*");
+        }
+        return answer.toString();
     }
 
     public static String getSmallTriangle() {
-        return null;
+        StringBuilder answer = new StringBuilder();
+        int rowCounter = 1;
+        for(int i = 1; i<= 4; i++){
+            for(int j = 1; j<=rowCounter; j++) {
+                answer.append("*");
+                if (j == rowCounter) {
+                    answer.append("\n");
+                    rowCounter++;
+                    break;
+                }
+            }
+        }
+        return answer.toString();
+
     }
 
     public static String getLargeTriangle() {
-        return null;
+
+        StringBuilder answer = new StringBuilder();
+        int rowCounter = 1;
+        for(int i = 1; i<= 9; i++){
+            for(int j = 1; j<=rowCounter; j++) {
+                answer.append("*");
+                if (j == rowCounter) {
+                    answer.append("\n");
+                    rowCounter++;
+                    break;
+                }
+            }
+        }
+        return answer.toString();
+
     }
 }

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 = "681012141618";
         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;