sophiawho / COMP202MidtermReview

CSUS midterm review for COMP 202 W2018.

COMP 202 Winter 2018 Midterm Review

Binary numbers

• Decimal-to-binary, binary-to-decimal

Variables and primitive data types

• Creating variables of different types

Expressions and assignments

• What is ‘evaluation’ of an expression

Input arguments

• What are they, and how are they used?

Methods

• Passing parameters, returning values
• Calling a method, void methods

Mod operator (%)

• What is it? What have we used it for?

If/else-if/else

• What’s the order they are evaluated in?

Strings and chars

• How do we get each char in a String?
• How can we test chars?
• How does concatenation work?

For and while loops

• Loop conditions
• Initialization/condition/modification
• Know how many times a loop is iterated

Type Issues

• Casting, conversions, integer division

Different kinds of errors

• Logic/style/compile-time/run-time
• Examples of when each occur

Random numbers

• How to generate a number from min to max

Arrays

• What do they store?
• How do we create them?
• How do we do calculations on arrays?
• How do we access elements in an array?
• Two-dimensional arrays are testable

Reference Types

• What do we copy over when we call a method? Values vs addresses
• Can we change an array in a method? A String?
• What is the null value used for?