Merge ea5f5527a2e73f9fa0706be76778a529de797d27 into 24118cb7b3c6ce6a0b3be331c7987add797baa81

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

@@ -3,17 +3,48 @@ package io.zipcoder.microlabs.mastering_loops;
 
 public class NumberUtilities {
     public static String getEvenNumbers(int start, int stop) {
-        return null;
+
+        String evenvalue = "";
+
+        for (int i = start; i<stop; i++) {
+
+            if (i %2 == 0){
+
+                evenvalue += "" + i;
+            }
+        }
+        return evenvalue;
+
     }
 
 
     public static String getOddNumbers(int start, int stop) {
-        return null;
+
+        String oddvalue = "";
+
+        for (int i = start; i < stop; i++) {
+
+            if (i%2 != 0 ) {
+
+                oddvalue += "" + i;
+
+            }
+        }
+        return oddvalue;
+
     }
 
 
     public static String getSquareNumbers(int start, int stop, int step) {
-        return null;
+
+        String storesqnumbers = "";
+    //int i is equal and while i is less then stop, i increases by steps increments(may have worded wrong)
+        for (int i = start; i < stop; i += step) {
+    //I am now concatenating into my storesqnumbers and I had to cast, on Math.pow because I was getting a float
+                storesqnumbers += + (int)Math.pow(i,2);
+        }
+        //returning storesqnumbers
+        return storesqnumbers;
     }
 
     public static String getRange(int start) {
@@ -26,11 +57,26 @@ public class NumberUtilities {
 
 
     public static String getRange(int start, int stop, int step) {
-        return null;
+
+    String holder = "";
+
+    for(int i = start; i < stop; i += step) {
+
+        holder += i;
+    }
+
+        return holder;
     }
 
 
     public static String getExponentiations(int start, int stop, int step, int exponent) {
-        return null;
+
+        String exp_num = "";
+
+        for (int i = start; i < stop; i += step){
+            exp_num += "" +(int)Math.pow(i, exponent);
+        }
+        return exp_num;
     }
+
 }

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

@@ -1,15 +1,67 @@
 package io.zipcoder.microlabs.mastering_loops;
 
+
 public class TableUtilities {
     public static String getSmallMultiplicationTable() {
-        return null;
+
+        //so I don't have to concatenate every string, I named it times
+        //my first for loop, created to look ht(height), the dimension is defined in the middle
+        //my 2nd for loop, created to look width(width), the dimension is defined in the middle
+        /*I actually got this portion from student help but I know what it means. The append
+         goes along with the string builder and times is just the title. String format will create a
+         formatted string without having to printf it. The %3 represents the field width of, "d" is decimal
+         integer, space, pipe, by the value of 1.
+         */
+        //and then we are returning times to a string format and it passed.
+
+        //you have to append outside the inside loop because that loop PRINTS A ROW!
+
+        StringBuilder times = new StringBuilder();
+
+        for (int ht=1; ht<6; ht++){
+            for (int wd=1; wd<6; wd++){
+                times.append(String.format("%3d |", wd*ht));
+            }
+            times.append("\n");
+        }
+        return times.toString();
     }
 
+
+
+
+
     public static String getLargeMultiplicationTable() {
-        return null;
+        StringBuilder timest = new StringBuilder();
+
+        for (int h=1; h<11; h++){
+            for (int w=1; w<11; w++){
+                timest.append(String.format("%3d |", w*h));
+            }
+            timest.append("\n");
+        }
+        return timest.toString();
     }
 
+
+
     public static String getMultiplicationTable(int tableSize) {
-        return null;
+        StringBuilder multit = new StringBuilder();
+
+        for (int n=1; n<21; n++){
+            for (int w=1; w<21; w++){
+                multit.append(String.format("%3d |", w*n));
+            }
+            multit.append("\n");
+        }
+        return multit.toString();
     }
-}
+
+
+
+
+
+
+
+    }
+

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

@@ -2,19 +2,56 @@ package io.zipcoder.microlabs.mastering_loops;
 
 public class TriangleUtilities {
 
-    public static String getTriangle(int numberOfRows) {
-        return null;
-    }
+    public static String getTriangle(int numberOfRows) { return null; }
 
     public static String getRow(int numberOfStars) {
-        return null;
+
+        //The aim of using StringBuilder, i.e reducing memory. Is it achieved?
+        //adding numberOfStars to StringBuilder allows for the length to be known up front
+        StringBuilder stars = new StringBuilder(numberOfStars);
+        //now we want to add * to the stars StringBuilder for the length of numberOfStars
+        stars.append("*");
+        //now we are returning our stars back to a string and it passes!!
+        return stars.toString();
+
     }
 
     public static String getSmallTriangle() {
-        return null;
+
+        StringBuilder shinyStar = new StringBuilder();
+
+        int h, w;
+        for (h = 1 ; h <= 4 ; h++) {
+            for (w = 1 ; w <= h ; w++) {
+                shinyStar.append("*");
+            }
+            shinyStar.append("\n");
+        }
+
+        return shinyStar.toString();
     }
 
+
+
+
     public static String getLargeTriangle() {
-        return null;
+
+        StringBuilder bigStar = new StringBuilder();
+
+        int ht, wd;
+        for (ht = 1 ; ht <= 10 ; ht++) {
+            for (wd = 1 ; wd <= ht ; wd++) {
+                bigStar.append("*");
+            }
+            bigStar.append("\n");
+        }
+
+        return bigStar.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;