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Tutor profile: Nooreddin N.

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Nooreddin N.
Teaching at NYC universities for more than 4 years
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Questions

Subject: Java Programming

TutorMe
Question:

Why comparing two strings should be down using equals function rather than a == operator.

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Nooreddin N.
Answer:

== operator checks the address of two strings, not the content of them. It works only if they refer to literal values (i.e. They are stored in the string literal pool). equals method is overridden in the String class to check the content of two strings.

Subject: Discrete Math

TutorMe
Question:

Write down a formula for the sequence $$3,4,6,9,13,18,24,31,38,...$$ Is your formula recursive or explicit?

Inactive
Nooreddin N.
Answer:

$$a_1 = 3.$$ $$a_n = a_{n−1} + (n − 1).$$ This is a recursive formula.

Subject: C++ Programming

TutorMe
Question:

What are the main methods of passing the arguments to the functions?

Inactive
Nooreddin N.
Answer:

Pass by value, pass by reference and pass by constant reference.

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