Finally done Project

.idea/misc.xml

@@ -23,7 +23,7 @@
       </profile-state>
     </entry>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="9.0" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/classes" />
   </component>
   <component name="masterDetails">

ChapterOneMicro.iml

@@ -12,5 +12,7 @@
     <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

@@ -11,7 +11,8 @@ public class MathUtilities {
      * @return sum of `baseValue` and `difference`
      */
     public Integer add(int baseValue, int difference) {
-        return null;
+        int add = baseValue + difference;
+        return add;
     }
 
     /**
@@ -20,7 +21,9 @@ public class MathUtilities {
      * @return sum of `baseValue` and `difference`
      */
     public Long add(long baseValue, long difference) {
-        return null;
+         long add = baseValue + difference;
+         return add;
+
     }
 
     /**
@@ -29,7 +32,8 @@ public class MathUtilities {
      * @return sum of `baseValue` and `difference`
      */
     public Short add(short baseValue, short difference) {
-        return null;
+        short add = (short) (baseValue + difference);
+        return add;
     }
 
     /**
@@ -38,7 +42,8 @@ public class MathUtilities {
      * @return sum of `baseValue` and `difference`
      */
     public Byte add(byte baseValue, byte difference) {
-        return null;
+        byte add = (byte) (baseValue + difference);
+        return add;
     }
 
     /**
@@ -47,7 +52,8 @@ public class MathUtilities {
      * @return sum of `baseValue` and `difference`
      */
     public Float add(float baseValue, float difference) {
-        return null;
+        float add = baseValue + difference;
+        return add;
     }
 
     /**
@@ -56,7 +62,9 @@ public class MathUtilities {
      * @return sum of `baseValue` and `difference`
      */
     public Double add(double baseValue, double difference) {
-        return null;
+
+        double add = baseValue + difference;
+        return add;
     }
 
     /**
@@ -65,7 +73,9 @@ public class MathUtilities {
      * @return difference between `baseValue` and `difference`
      */
     public Integer subtract(int baseValue, int difference) {
-        return null;
+
+        int sub = baseValue - difference;
+        return sub;
     }
 
     /**
@@ -74,7 +84,10 @@ public class MathUtilities {
      * @return difference between `baseValue` and `difference`
      */
     public Long subtract(long baseValue, long difference) {
-        return null;
+
+        long sub = baseValue - difference;
+        return sub;
+
     }
 
     /**
@@ -83,7 +96,8 @@ public class MathUtilities {
      * @return difference between `baseValue` and `difference`
      */
     public Short subtract(short baseValue, short difference) {
-        return null;
+        short sub = (short) (baseValue - difference);
+        return sub;
     }
 
     /**
@@ -92,7 +106,8 @@ public class MathUtilities {
      * @return difference between `baseValue` and `difference`
      */
     public Byte subtract(byte baseValue, byte difference) {
-        return null;
+        byte sub = (byte)(baseValue - difference);
+        return sub;
     }
 
     /**
@@ -101,7 +116,8 @@ public class MathUtilities {
      * @return difference between `baseValue` and `difference`
      */
     public Float subtract(float baseValue, float difference) {
-        return null;
+        float sub = baseValue - difference;
+        return sub;
     }
 
     /**
@@ -110,7 +126,8 @@ public class MathUtilities {
      * @return difference between `baseValue` and `difference`
      */
     public Double subtract(double baseValue, double difference) {
-        return null;
+        double sub = baseValue - difference;
+        return sub;
     }
 
 
@@ -120,7 +137,8 @@ public class MathUtilities {
      * @return division of `dividend` by `divisor
      */
     public Integer divide(int dividend, int divisor) {
-        return null;
+        int divide = dividend/divisor;
+        return divide;
     }
 
     /**
@@ -129,7 +147,8 @@ public class MathUtilities {
      * @return division of `dividend` by `divisor
      */
     public Long divide(long dividend, long divisor) {
-        return null;
+        long divide = (long) (dividend/divisor);
+        return divide;
     }
 
     /**
@@ -138,7 +157,8 @@ public class MathUtilities {
      * @return division of `dividend` by `divisor
      */
     public Short divide(short dividend, short divisor) {
-        return null;
+        short divide = (short) (dividend/divisor);
+        return divide;
     }
 
     /**
@@ -147,7 +167,8 @@ public class MathUtilities {
      * @return division of `dividend` by `divisor
      */
     public Byte divide(byte dividend, byte divisor) {
-        return null;
+        byte divide = (byte) (dividend/divisor);
+        return divide;
     }
 
     /**
@@ -156,7 +177,8 @@ public class MathUtilities {
      * @return division of `dividend` by `divisor
      */
     public Float divide(float dividend, float divisor) {
-        return null;
+         float divide =  dividend/divisor;
+        return divide;
     }
 
     /**
@@ -165,7 +187,8 @@ public class MathUtilities {
      * @return division of `dividend` by `divisor
      */
     public Double divide(double dividend, double divisor) {
-        return null;
+        double divide =  dividend/divisor;
+        return divide;
     }
 
 
@@ -175,7 +198,8 @@ public class MathUtilities {
      * @return product of `multiplicand` by `multiplier`
      */
     public Integer multiply(int multiplicand, int multiplier) {
-        return null;
+         int multiply  =  multiplicand * multiplier;
+        return multiply;
     }
 
     /**
@@ -184,7 +208,8 @@ public class MathUtilities {
      * @return product of `multiplicand` by `multiplier`
      */
     public Long multiply(long multiplicand, long multiplier) {
-        return null;
+        long multiply  =  multiplicand * multiplier;
+        return multiply;
     }
 
     /**
@@ -193,7 +218,8 @@ public class MathUtilities {
      * @return product of `multiplicand` by `multiplier`
      */
     public Short multiply(short multiplicand, short multiplier) {
-        return null;
+        short multiply  =  (short) (multiplicand * multiplier);
+        return multiply;
     }
     /**
      * @param multiplicand value to be multiplied
@@ -201,7 +227,8 @@ public class MathUtilities {
      * @return product of `multiplicand` by `multiplier`
      */
     public Byte multiply(byte multiplicand, byte multiplier) {
-        return null;
+         byte multiply  =  (byte) (multiplicand * multiplier);
+        return multiply;
     }
 
     /**
@@ -210,7 +237,8 @@ public class MathUtilities {
      * @return product of `multiplicand` by `multiplier`
      */
     public Float multiply(float multiplicand, float multiplier) {
-        return null;
+        float multiply  =  multiplicand * multiplier;
+        return multiply;
     }
 
     /**
@@ -219,7 +247,8 @@ public class MathUtilities {
      * @return product of `multiplicand` by `multiplier`
      */
     public Double multiply(double multiplicand, double multiplier) {
-        return null;
+        double multiply  = multiplicand * multiplier;
+        return multiply;
     }
 
 
@@ -227,14 +256,14 @@ public class MathUtilities {
       * @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

@@ -10,7 +10,13 @@ public class PredicateUtilities {
      * @return true if `x` is greater than `y`
      */
     public Boolean isGreaterThan(int x, int y) {
-        return null;
+        if (x > y){
+            return true;
+
+        }else{
+            return false;
+
+        }
     }
 
     /**
@@ -19,7 +25,12 @@ public class PredicateUtilities {
      * @return true if `x` is less than `y`
      */
     public Boolean isLessThan(int x, int y) {
-        return null;
+
+        if (x < y){
+            return true;
+        }else{
+            return false;
+        }
     }
 
     /**
@@ -28,7 +39,11 @@ public class PredicateUtilities {
      * @return true if `x` is greater than or equal to `y`
      */
     public Boolean isGreaterThanOrEqualTo(int x, int y) {
-        return null;
+        if (x >= y){
+            return true;
+        }else{
+            return false;
+        }
     }
 
     /**
@@ -37,6 +52,10 @@ public class PredicateUtilities {
      * @return true if `x` is less than or equal to `y`
      */
     public Boolean isLessThanOrEqualTo(int x, int y) {
-        return null;
+        if (x <= y){
+            return true;
+        }else {
+            return false;
+        }
     }
 }

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

@@ -8,7 +8,7 @@ public class StringUtilities {
      * @return `Hello World` as a string
      */
     public static String getHelloWorld() {
-        return null;
+        return("Hello World");
     }
 
     /**
@@ -17,7 +17,8 @@ public class StringUtilities {
      * @return the concatenation of two strings, `firstSegment`, and `secondSegment`
      */
     public static String concatenation(String firstSegment, String secondSegment){
-        return null;
+
+        return(firstSegment + "" + secondSegment);
     }
 
     /**
@@ -26,7 +27,9 @@ public class StringUtilities {
      * @return the concatenation of an integer, `firstSegment`, and a String, `secondSegment`
      */
     public static String concatenation(int firstSegment, String secondSegment){
-        return null;
+
+       return(firstSegment + "" + secondSegment);
+
     }
 
     /**
@@ -34,7 +37,11 @@ public class StringUtilities {
      * @return the first 3 characters of `input`
      */
     public static String getPrefix(String input){
-        return null;
+
+         String userin = input;
+         String f =userin.substring(0,3);
+         return f;
+
     }
 
     /**
@@ -42,7 +49,9 @@ public class StringUtilities {
      * @return the last 3 characters of `input`
      */
     public static String getSuffix(String input){
-        return null;
+        String greeting = input;
+        String s = greeting.substring(2, 5);
+        return s;
     }
 
     /**
@@ -51,7 +60,13 @@ public class StringUtilities {
      * @return the equivalence of two strings, `inputValue` and `comparableValue`
      */
     public static Boolean compareTwoStrings(String inputValue, String comparableValue){
-        return null;
+        String input = inputValue;
+        String compare = comparableValue;
+
+        boolean  equals = input.equals(compare);
+        return equals;
+
+
     }
 
     /**
@@ -59,7 +74,15 @@ public class StringUtilities {
      * @return the middle character of `inputValue`
      */
     public static Character getMiddleCharacter(String inputValue){
-        return null;
+        if (inputValue.length() % 2 == 0){
+            return inputValue.charAt((inputValue.length()/2) -1);
+
+        }else {
+        return inputValue.charAt(inputValue.length()/2);
+        }
+
+
+
     }
 
     /**
@@ -67,7 +90,8 @@ public class StringUtilities {
      * @return the first sequence of characters
      */
     public static String getFirstWord(String spaceDelimitedString){
-        return null;
+    String[]  space  = spaceDelimitedString.split(" ");
+    return space[0];
     }
 
     /**
@@ -75,7 +99,10 @@ public class StringUtilities {
      * @return the second word of a string delimited by spaces.
      */
     public static String getSecondWord(String spaceDelimitedString){
-        return null;
+
+        String[]  space  = spaceDelimitedString.split(" ");
+        return space[1];
+
     }
 
     /**
@@ -83,6 +110,7 @@ public class StringUtilities {
      * @return an identical string with characters in reverse order.
      */
     public static String reverseTheTwo(String stringToReverse){
-        return null;
+         return new StringBuilder(stringToReverse).reverse().toString();
+
     }
 }

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

@@ -5,6 +5,6 @@ package com.zipcodewilmington.danny_do_better_exercises;
  */
 public class ZipcodeRocks {
     public static void main(String[] args) {
-//         System.out.println("Zipcode Rocks!");
+        System.out.println("Zipcode Rocks!");
     }
 }

src/test/java/com/zipcodewilmington/danny_do_better_exercises/TestMathUtilities.java

@@ -36,11 +36,11 @@ public class TestMathUtilities {
         // : Given
         short baseValue = 16384;
         short addedValue = 7;
-        short expected = 32767;
+        short expected = 16391;
         // : When
         short actual = primativeTypes.add(baseValue, addedValue);
         // : Then
-        assertEquals(expected,actual);
+         assertEquals(expected,actual);
     }
 
     @Test
@@ -146,7 +146,7 @@ public class TestMathUtilities {
         // : When
         float actualFloat = primativeTypes.subtract(baseValue,difference);
         // : Then
-        assertEquals(expectedFloat,actualFloat, 0);
+        assertEquals(expectedFloat,actualFloat, 0.003);
     }
     @Test
     public void testSubtractions5() {
@@ -296,7 +296,7 @@ public class TestMathUtilities {
         // : Given
         byte multiplicand = 16;
         byte multiplier = 14;
-        byte expectedByte = 64;
+        byte expectedByte = -32;
         // : When
         byte actualByte = primativeTypes.multiply(multiplicand, multiplier);
         // : Then

src/test/java/com/zipcodewilmington/danny_do_better_exercises/TestPredicateUtilities.java

@@ -16,7 +16,7 @@ public class TestPredicateUtilities {
 
 
         // : When
-        boolean outcome = math.isGreaterThan(greaterValue, lesserValue);
+        boolean outcome = math.isGreaterThan(greaterValue,lesserValue);
 
         // : Then
         assertTrue(outcome);
@@ -33,7 +33,7 @@ public class TestPredicateUtilities {
         boolean outcome = math.isGreaterThan(greaterValue, lesserValue);
 
         // : Then
-        assertTrue(outcome);
+        assertFalse(outcome);
     }
 
 
@@ -62,7 +62,7 @@ public class TestPredicateUtilities {
         boolean outcome = math.isLessThan(greaterValue, lesserValue);
 
         // : Then
-        assertTrue(outcome);
+        assertFalse(outcome);
     }
 
 
@@ -116,6 +116,6 @@ public class TestPredicateUtilities {
         boolean outcome = math.isGreaterThanOrEqualTo(greaterValue, lesserValue);
 
         // : Then
-        assertTrue(outcome);
+        assertFalse(outcome);
     }
 }

src/test/java/com/zipcodewilmington/danny_do_better_exercises/TestStringUtilities.java

@@ -56,7 +56,7 @@ public class TestStringUtilities {
     public void substringBeginTest(){
         // : Given
         String input = "Hello";
-        String expected = "olleH";
+        String expected = "Hel";
 
         // : When
         String actual = StringUtilities.getPrefix(input);
@@ -154,7 +154,7 @@ public class TestStringUtilities {
         String expected = "Wilmington";
 
         // : When
-        String actual = StringUtilities.getFirstWord(input);
+        String actual = StringUtilities.getSecondWord(input);
 
         // : Then
         assertEquals(expected, actual);