I'm goooooing through changes

ChapterOneMicro.iml

     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.12" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.hamcrest:hamcrest-core:1.3" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.12" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.hamcrest:hamcrest-core:1.3" level="project" />
   </component>
 </module>

src/main/java/com/zipcodewilmington/danny_do_better_exercises/MathUtilities.java

  */
 public class MathUtilities {
 
-    /**
-     * @param baseValue  starting value
-     * @param difference value to add to starting value
-     * @return sum of `baseValue` and `difference`
-     */
     public Integer add(int baseValue, int difference) {
-        return null;
+        return baseValue + difference;
     }
 
-    /**
-     * @param baseValue  starting value
-     * @param difference value to add to starting value
-     * @return sum of `baseValue` and `difference`
-     */
     public Long add(long baseValue, long difference) {
-        return null;
+        return baseValue + difference;
     }
 
-    /**
-     * @param baseValue  starting value
-     * @param difference value to add to starting value
-     * @return sum of `baseValue` and `difference`
-     */
     public Short add(short baseValue, short difference) {
-        return null;
+         return (short) (baseValue + difference);
     }
 
-    /**
-     * @param baseValue  starting value
-     * @param difference value to add to starting value
-     * @return sum of `baseValue` and `difference`
-     */
     public Byte add(byte baseValue, byte difference) {
-        return null;
+        return (byte) (baseValue + difference);
     }
 
-    /**
-     * @param baseValue  starting value
-     * @param difference value to add to starting value
-     * @return sum of `baseValue` and `difference`
-     */
     public Float add(float baseValue, float difference) {
-        return null;
+        return baseValue + difference;
     }
 
-    /**
-     * @param baseValue  starting value
-     * @param difference value to add to starting value
-     * @return sum of `baseValue` and `difference`
-     */
     public Double add(double baseValue, double difference) {
-        return null;
+        return baseValue + difference;
     }
 
-    /**
-     * @param baseValue  starting value
-     * @param difference value to subtract from starting value
-     * @return difference between `baseValue` and `difference`
-     */
     public Integer subtract(int baseValue, int difference) {
-        return null;
+        return baseValue - difference;
     }
 
-    /**
-     * @param baseValue  starting value
-     * @param difference value to subtract from starting value
-     * @return difference between `baseValue` and `difference`
-     */
     public Long subtract(long baseValue, long difference) {
-        return null;
+        return baseValue - difference;
     }
 
-    /**
-     * @param baseValue  starting value
-     * @param difference value to subtract from starting value
-     * @return difference between `baseValue` and `difference`
-     */
     public Short subtract(short baseValue, short difference) {
-        return null;
+        return (short) (baseValue - difference);
     }
 
-    /**
-     * @param baseValue  starting value
-     * @param difference value to subtract from starting value
-     * @return difference between `baseValue` and `difference`
-     */
     public Byte subtract(byte baseValue, byte difference) {
-        return null;
+        return (byte) (baseValue - difference);
     }
 
-    /**
-     * @param baseValue  starting value
-     * @param difference value to subtract from starting value
-     * @return difference between `baseValue` and `difference`
-     */
     public Float subtract(float baseValue, float difference) {
-        return null;
+        return baseValue - difference;
     }
 
-    /**
-     * @param baseValue  starting value
-     * @param difference value to subtract from starting value
-     * @return difference between `baseValue` and `difference`
-     */
     public Double subtract(double baseValue, double difference) {
-        return null;
+        return baseValue - difference;
     }
 
-
-    /**
-     * @param dividend value to be divided
-     * @param divisor value to divide by
-     * @return division of `dividend` by `divisor
-     */
     public Integer divide(int dividend, int divisor) {
-        return null;
+        return dividend / divisor;
     }
 
-    /**
-     * @param dividend value to be divided
-     * @param divisor value to divide by
-     * @return division of `dividend` by `divisor
-     */
     public Long divide(long dividend, long divisor) {
-        return null;
+        return dividend / divisor;
     }
 
-    /**
-     * @param dividend value to be divided
-     * @param divisor value to divide by
-     * @return division of `dividend` by `divisor
-     */
     public Short divide(short dividend, short divisor) {
-        return null;
+        return (short) (dividend / divisor);
     }
 
-    /**
-     * @param dividend value to be divided
-     * @param divisor value to divide by
-     * @return division of `dividend` by `divisor
-     */
     public Byte divide(byte dividend, byte divisor) {
-        return null;
+        return (byte) (dividend / divisor);
     }
 
-    /**
-     * @param dividend value to be divided
-     * @param divisor value to divide by
-     * @return division of `dividend` by `divisor
-     */
     public Float divide(float dividend, float divisor) {
-        return null;
+        return dividend / divisor;
     }
 
-    /**
-     * @param dividend value to be divided
-     * @param divisor value to divide by
-     * @return division of `dividend` by `divisor
-     */
     public Double divide(double dividend, double divisor) {
-        return null;
+        return dividend / divisor;
     }
 
-
-    /**
-     * @param multiplicand value to be multiplied
-     * @param multiplier value to multiply by
-     * @return product of `multiplicand` by `multiplier`
-     */
     public Integer multiply(int multiplicand, int multiplier) {
-        return null;
+        return multiplicand * multiplier;
     }
 
-    /**
-     * @param multiplicand value to be multiplied
-     * @param multiplier value to multiply by
-     * @return product of `multiplicand` by `multiplier`
-     */
     public Long multiply(long multiplicand, long multiplier) {
-        return null;
+        return multiplicand * multiplier;
     }
 
-    /**
-     * @param multiplicand value to be multiplied
-     * @param multiplier value to multiply by
-     * @return product of `multiplicand` by `multiplier`
-     */
     public Short multiply(short multiplicand, short multiplier) {
-        return null;
+        return (short) (multiplicand * multiplier);
     }
-    /**
-     * @param multiplicand value to be multiplied
-     * @param multiplier value to multiply by
-     * @return product of `multiplicand` by `multiplier`
-     */
+
     public Byte multiply(byte multiplicand, byte multiplier) {
-        return null;
+        return (byte) (multiplicand * multiplier);
     }
 
-    /**
-     * @param multiplicand value to be multiplied
-     * @param multiplier value to multiply by
-     * @return product of `multiplicand` by `multiplier`
-     */
     public Float multiply(float multiplicand, float multiplier) {
-        return null;
+        Float floatProduct = multiplicand * multiplier;
+        return floatProduct;
     }
 
-    /**
-     * @param multiplicand value to be multiplied
-     * @param multiplier value to multiply by
-     * @return product of `multiplicand` by `multiplier`
-     */
     public Double multiply(double multiplicand, double multiplier) {
-        return null;
+        Double doubleProduct = multiplicand * multiplier;
+        return doubleProduct;
     }
 
-
-    /**
-      * @return true
-     */
     public Boolean returnTrue() {
-        return null;
+        return true;
     }
 
-    /**
-     * @return false
-     */
     public Boolean returnFalse() {
-        return null;
+        return false;
     }
 
 }

src/main/java/com/zipcodewilmington/danny_do_better_exercises/PredicateUtilities.java

 /**
  * Created by dan on 6/14/17.
  */
+
 public class PredicateUtilities {
-    /**
-     * @param x
-     * @param y
-     * @return true if `x` is greater than `y`
-     */
+
     public Boolean isGreaterThan(int x, int y) {
-        return null;
+        return x > y;
     }
 
-    /**
-     * @param x
-     * @param y
-     * @return true if `x` is less than `y`
-     */
     public Boolean isLessThan(int x, int y) {
-        return null;
+        return x < y;
     }
 
-    /**
-     * @param x
-     * @param y
-     * @return true if `x` is greater than or equal to `y`
-     */
     public Boolean isGreaterThanOrEqualTo(int x, int y) {
-        return null;
+        return x >= y;
     }
 
-    /**
-     * @param x
-     * @param y
-     * @return true if `x` is less than or equal to `y`
-     */
     public Boolean isLessThanOrEqualTo(int x, int y) {
-        return null;
+        return x <= y;
     }
 }

src/main/java/com/zipcodewilmington/danny_do_better_exercises/StringUtilities.java

 package com.zipcodewilmington.danny_do_better_exercises;
 
+
 /**
  * Created by dan on 6/14/17.
  */
 public class StringUtilities {
-    /**
-     * @return `Hello World` as a string
-     */
+
     public static String getHelloWorld() {
-        return null;
+        String ayMane = "Hello World";
+        return ayMane;
     }
 
     /**
      * @return the second word of a string delimited by spaces.
      */
     public static String getSecondWord(String spaceDelimitedString){
-        return null;
+        String[] probablyWilmington = spaceDelimitedString.split("\\s+");
+        return probablyWilmington[1];
     }
 
-    /**
-     * @param stringToReverse
-     * @return an identical string with characters in reverse order.
-     */
     public static String reverseTheTwo(String stringToReverse){
-        return null;
+        return new StringBuilder(stringToReverse).reverse().toString();
     }
 }