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48 changes: 24 additions & 24 deletions src/main/java/com/zipcodewilmington/danny_do_better_exercises/MathUtilities.java
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Original file line number Diff line number Diff line change
Expand Up @@ -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;
}

/**
Expand All @@ -20,7 +20,7 @@ public Integer add(int baseValue, int difference) {
* @return sum of `baseValue` and `difference`
*/
public Long add(long baseValue, long difference) {
return null;
return (long)(baseValue + difference);
}

/**
Expand All @@ -29,7 +29,7 @@ public Long add(long baseValue, long difference) {
* @return sum of `baseValue` and `difference`
*/
public Short add(short baseValue, short difference) {
return null;
return (short)(baseValue + difference);
}

/**
Expand All @@ -38,7 +38,7 @@ public Short add(short baseValue, short difference) {
* @return sum of `baseValue` and `difference`
*/
public Byte add(byte baseValue, byte difference) {
return null;
return (byte)(baseValue + difference);
}

/**
Expand All @@ -47,7 +47,7 @@ public Byte add(byte baseValue, byte difference) {
* @return sum of `baseValue` and `difference`
*/
public Float add(float baseValue, float difference) {
return null;
return (float)(baseValue + difference);
}

/**
Expand All @@ -56,7 +56,7 @@ public Float add(float baseValue, float difference) {
* @return sum of `baseValue` and `difference`
*/
public Double add(double baseValue, double difference) {
return null;
return (double)(baseValue + difference);
}

/**
Expand All @@ -65,7 +65,7 @@ public Double add(double baseValue, double difference) {
* @return difference between `baseValue` and `difference`
*/
public Integer subtract(int baseValue, int difference) {
return null;
return (Integer) (baseValue - difference);
}

/**
Expand All @@ -74,7 +74,7 @@ public Integer subtract(int baseValue, int difference) {
* @return difference between `baseValue` and `difference`
*/
public Long subtract(long baseValue, long difference) {
return null;
return (Long) (baseValue - difference);
}

/**
Expand All @@ -83,7 +83,7 @@ public Long subtract(long baseValue, long difference) {
* @return difference between `baseValue` and `difference`
*/
public Short subtract(short baseValue, short difference) {
return null;
return (short) (baseValue - difference);
}

/**
Expand All @@ -92,7 +92,7 @@ public Short subtract(short baseValue, short difference) {
* @return difference between `baseValue` and `difference`
*/
public Byte subtract(byte baseValue, byte difference) {
return null;
return (byte) (baseValue - difference);
}

/**
Expand All @@ -101,7 +101,7 @@ public Byte subtract(byte baseValue, byte difference) {
* @return difference between `baseValue` and `difference`
*/
public Float subtract(float baseValue, float difference) {
return null;
return (float) (baseValue - difference);
}

/**
Expand All @@ -110,7 +110,7 @@ public Float subtract(float baseValue, float difference) {
* @return difference between `baseValue` and `difference`
*/
public Double subtract(double baseValue, double difference) {
return null;
return (double) (baseValue - difference);
}


Expand All @@ -120,7 +120,7 @@ public Double subtract(double baseValue, double difference) {
* @return division of `dividend` by `divisor
*/
public Integer divide(int dividend, int divisor) {
return null;
return (int) (dividend / divisor);
}

/**
Expand All @@ -129,7 +129,7 @@ public Integer divide(int dividend, int divisor) {
* @return division of `dividend` by `divisor
*/
public Long divide(long dividend, long divisor) {
return null;
return (long) (dividend / divisor);
}

/**
Expand All @@ -138,7 +138,7 @@ public Long divide(long dividend, long divisor) {
* @return division of `dividend` by `divisor
*/
public Short divide(short dividend, short divisor) {
return null;
return (short) (dividend / divisor);
}

/**
Expand All @@ -147,7 +147,7 @@ public Short divide(short dividend, short divisor) {
* @return division of `dividend` by `divisor
*/
public Byte divide(byte dividend, byte divisor) {
return null;
return (byte) (dividend / divisor);
}

/**
Expand All @@ -156,7 +156,7 @@ public Byte divide(byte dividend, byte divisor) {
* @return division of `dividend` by `divisor
*/
public Float divide(float dividend, float divisor) {
return null;
return (float) (dividend / divisor);
}

/**
Expand All @@ -165,7 +165,7 @@ public Float divide(float dividend, float divisor) {
* @return division of `dividend` by `divisor
*/
public Double divide(double dividend, double divisor) {
return null;
return (double) (dividend / divisor);
}


Expand All @@ -175,7 +175,7 @@ public Double divide(double dividend, double divisor) {
* @return product of `multiplicand` by `multiplier`
*/
public Integer multiply(int multiplicand, int multiplier) {
return null;
return (int) (multiplicand * multiplier);
}

/**
Expand All @@ -184,7 +184,7 @@ public Integer multiply(int multiplicand, int multiplier) {
* @return product of `multiplicand` by `multiplier`
*/
public Long multiply(long multiplicand, long multiplier) {
return null;
return (long) (multiplicand * multiplier);
}

/**
Expand All @@ -193,15 +193,15 @@ public Long multiply(long multiplicand, long multiplier) {
* @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);
}

/**
Expand All @@ -210,7 +210,7 @@ public Byte multiply(byte multiplicand, byte multiplier) {
* @return product of `multiplicand` by `multiplier`
*/
public Float multiply(float multiplicand, float multiplier) {
return null;
return (float) (multiplicand * multiplier);
}

/**
Expand All @@ -219,6 +219,6 @@ public Float multiply(float multiplicand, float multiplier) {
* @return product of `multiplicand` by `multiplier`
*/
public Double multiply(double multiplicand, double multiplier) {
return null;
return (double) (multiplicand * multiplier);
}
}
12 changes: 6 additions & 6 deletions src/main/java/com/zipcodewilmington/danny_do_better_exercises/PredicateUtilities.java
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ public class PredicateUtilities {
* @return true if `x` is greater than `y`
*/
public Boolean isGreaterThan(int x, int y) {
return null;
return x > y;
}

/**
Expand All @@ -19,7 +19,7 @@ public Boolean isGreaterThan(int x, int y) {
* @return true if `x` is less than `y`
*/
public Boolean isLessThan(int x, int y) {
return null;
return x < y;
}

/**
Expand All @@ -28,7 +28,7 @@ public Boolean isLessThan(int x, int y) {
* @return true if `x` is greater than or equal to `y`
*/
public Boolean isGreaterThanOrEqualTo(int x, int y) {
return null;
return x >= y;
}

/**
Expand All @@ -37,22 +37,22 @@ public Boolean isGreaterThanOrEqualTo(int x, int y) {
* @return true if `x` is less than or equal to `y`
*/
public Boolean isLessThanOrEqualTo(int x, int y) {
return null;
return x <= y;
}


/**
* @return true
*/
public Boolean returnTrue() {
return null;
return true;
}

/**
* @return false
*/
public Boolean returnFalse() {
return null;
return false;
}

}
8 changes: 4 additions & 4 deletions src/main/java/com/zipcodewilmington/danny_do_better_exercises/StringUtilities.java
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Expand Up @@ -8,7 +8,7 @@ public class StringUtilities {
* @return `Hello World` as a string
*/
public static String getHelloWorld() {
return null;
return "Hello World";
}

/**
Expand All @@ -17,7 +17,7 @@ public static String getHelloWorld() {
* @return the concatenation of two strings, `firstSegment`, and `secondSegment`
*/
public static String concatenation(String firstSegment, String secondSegment){
return null;
return firstSegment + secondSegment;
}

/**
Expand All @@ -26,15 +26,15 @@ public static String concatenation(String firstSegment, String secondSegment){
* @return the concatenation of an integer, `firstSegment`, and a String, `secondSegment`
*/
public static String concatenation(int firstSegment, String secondSegment){
return null;
return firstSegment + secondSegment;
}

/**
* @param input a string to be manipulated
* @return the first 3 characters of `input`
*/
public static String getPrefix(String input){
return null;
return (input = )
}

/**
Expand Down