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Tutor profile: Noah D.

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Noah D.
Tutor at the University of Oregon
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Questions

Subject: Java Programming

TutorMe
Question:

How do int, double, and float differ from Integer, Double, and Float?

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Noah D.
Answer:

int, double, and float are all primitive data types. These are used and use a fixed amount of memory to store values. Integer, Double, and Float all represent their respective primitive data types but they store them in an object that has a set of methods and might use a greater amount of memory.

Subject: Computer Science (General)

TutorMe
Question:

What is polymorphism and how is it used?

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Noah D.
Answer:

Polymorphism is when you treat an inherited object as its superclass object. i.e. public class Sphere extends Shape { . . . } public class Main { public static void main (String[] args) { Shape newShape = new Sphere(); } }

Subject: C++ Programming

TutorMe
Question:

When would you pass-by-reference as opposed to pass-by-value?

Inactive
Noah D.
Answer:

Pass by value just passes the value of an object at a specific point in memory. Pass by reference passes the reference to the object in memory so that it can be dereferenced for it's value or changed in memory.

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