more stuff

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

@@ -11,7 +11,7 @@ public class MathUtilities {
      * @return sum of `baseValue` and `difference`
      */
     public Integer add(int baseValue, int difference) {
-        return null;
+        return baseValue +  difference;
     }
 
     /**
@@ -20,7 +20,8 @@ public class MathUtilities {
      * @return sum of `baseValue` and `difference`
      */
     public Long add(long baseValue, long difference) {
-        return null;
+
+        return  baseValue + difference;
     }
 
     /**
@@ -30,7 +31,7 @@ public class MathUtilities {
      */
     public Short add(short baseValue, short difference) {
 
-        return null;
+        return (short)(baseValue + difference);
     }
 
     /**
@@ -39,7 +40,9 @@ public class MathUtilities {
      * @return sum of `baseValue` and `difference`
      */
     public Byte add(byte baseValue, byte difference) {
-        return null;
+        return (byte)(baseValue + difference);
+
+
     }
 
     /**
@@ -48,7 +51,8 @@ public class MathUtilities {
      * @return sum of `baseValue` and `difference`
      */
     public Float add(float baseValue, float difference) {
-        return null;
+
+        return baseValue + difference;
     }
 
     /**
@@ -57,7 +61,8 @@ public class MathUtilities {
      * @return sum of `baseValue` and `difference`
      */
     public Double add(double baseValue, double difference) {
-        return null;
+
+        return baseValue + difference;
     }
 
     /**
@@ -66,7 +71,7 @@ public class MathUtilities {
      * @return difference between `baseValue` and `difference`
      */
     public Integer subtract(int baseValue, int difference) {
-        return null;
+        return baseValue - difference;
     }
 
     /**
@@ -75,7 +80,8 @@ public class MathUtilities {
      * @return difference between `baseValue` and `difference`
      */
     public Long subtract(long baseValue, long difference) {
-        return null;
+
+        return baseValue + difference;
     }
 
     /**
@@ -84,7 +90,8 @@ public class MathUtilities {
      * @return difference between `baseValue` and `difference`
      */
     public Short subtract(short baseValue, short difference) {
-        return null;
+
+        return (short)(baseValue - difference);
     }
 
     /**
@@ -93,7 +100,8 @@ public class MathUtilities {
      * @return difference between `baseValue` and `difference`
      */
     public Byte subtract(byte baseValue, byte difference) {
-        return null;
+
+        return (byte)(baseValue - difference);
     }
 
     /**
@@ -102,6 +110,7 @@ public class MathUtilities {
      * @return difference between `baseValue` and `difference`
      */
     public Float subtract(float baseValue, float difference) {
+
         return null;
     }
 
@@ -111,7 +120,7 @@ public class MathUtilities {
      * @return difference between `baseValue` and `difference`
      */
     public Double subtract(double baseValue, double difference) {
-        return null;
+        return baseValue - difference;
     }
 
 
@@ -121,7 +130,8 @@ public class MathUtilities {
      * @return division of `dividend` by `divisor
      */
     public Integer divide(int dividend, int divisor) {
-        return null;
+
+        return dividend/divisor;
     }
 
     /**
@@ -130,7 +140,8 @@ public class MathUtilities {
      * @return division of `dividend` by `divisor
      */
     public Long divide(long dividend, long divisor) {
-        return null;
+
+        return dividend/divisor;
     }
 
     /**
@@ -139,7 +150,8 @@ public class MathUtilities {
      * @return division of `dividend` by `divisor
      */
     public Short divide(short dividend, short divisor) {
-        return null;
+
+        return (short)(dividend/divisor);
     }
 
     /**
@@ -148,7 +160,8 @@ public class MathUtilities {
      * @return division of `dividend` by `divisor
      */
     public Byte divide(byte dividend, byte divisor) {
-        return null;
+
+        return (byte)(dividend/divisor);
     }
 
     /**
@@ -166,7 +179,8 @@ public class MathUtilities {
      * @return division of `dividend` by `divisor
      */
     public Double divide(double dividend, double divisor) {
-        return null;
+
+        return dividend/divisor;
     }
 
 
@@ -176,7 +190,8 @@ public class MathUtilities {
      * @return product of `multiplicand` by `multiplier`
      */
     public Integer multiply(int multiplicand, int multiplier) {
-        return null;
+
+        return multiplicand*multiplier;
     }
 
     /**
@@ -185,7 +200,8 @@ public class MathUtilities {
      * @return product of `multiplicand` by `multiplier`
      */
     public Long multiply(long multiplicand, long multiplier) {
-        return null;
+
+        return multiplicand*multiplier;
     }
 
     /**
@@ -194,7 +210,8 @@ public class MathUtilities {
      * @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
@@ -202,7 +219,8 @@ public class MathUtilities {
      * @return product of `multiplicand` by `multiplier`
      */
     public Byte multiply(byte multiplicand, byte multiplier) {
-        return null;
+
+        return (byte)(multiplicand * multiplier);
     }
 
     /**
@@ -211,7 +229,8 @@ public class MathUtilities {
      * @return product of `multiplicand` by `multiplier`
      */
     public Float multiply(float multiplicand, float multiplier) {
-        return null;
+
+        return (float) multiplicand * multiplier;
     }
 
     /**
@@ -220,7 +239,8 @@ public class MathUtilities {
      * @return product of `multiplicand` by `multiplier`
      */
     public Double multiply(double multiplicand, double multiplier) {
-        return null;
+
+        return (double) multiplicand*multiplier;
     }
 
 
@@ -228,14 +248,14 @@ public class MathUtilities {
       * @return true
      */
     public Boolean returnTrue() {
-        return null;
+        return true ;
     }
 
     /**
      * @return false
      */
     public Boolean returnFalse() {
-        return null;
+        return false ;
     }
 
 }