In the __init__ method for the ArrayListIterator class, what is the missing code?
def __init__(self, backingStore): self.backingStore = backingStore self.modCount = backingStore.getModCount()

A. self.first()
B. self.last()
C. self.next()
D. self.previous()


Answer: A

Computer Science & Information Technology

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Provide a design for the problem. Which architectural style suits the problem?

Identification of patterns In this exercise, we want you to implement a simple Sudoku game. Sudoku should fulfill the following requirements: - Sudoku displays a 9x9 grid of cells that are either blank or contain a number - The grid is divided into subsections called boxes, each having 3x3 cells - Sudoku provides a partially completed grid at the beginning of the game - The user can input numbers into empty fields - When a user specifies input for an empty field, a check should be done whether the input is valid (a number from 1 to 9). - It shall be equally checked, if the input is allowed (not already contained in line, column or box). - If those checks return false, the input is erased and the user can try again - At the end of the game, the user can inquire, whether the solution is correct. - The Sudoku puzzle that the user shall solve is specified via command-line arguments We have implemented a Sudoku solver for you, to provide you with code for solving a Sudoku puzzle. As you have to check the user?s solution at the end of the game you have to be able to solve the puzzle. Implement 3 strategies. 1. Strategy: Stub 2. Strategy: Lookup table 3. Strategy: Sudoku solver. Do research on technologies that are similar to CORBA and also address the location transparency and platform independence design goals. Refine the class diagram of Model View Controller shown in the Exercise to include the composite pattern.

Computer Science & Information Technology

An arrow at the end of a join line signifies a simple join because it involves the simple transfer of information

Indicate whether the statement is true or false

Computer Science & Information Technology

Cryptography can provide confidentiality through the use of encryption

Indicate whether the statement is true or false.

Computer Science & Information Technology

#define SQUARE(x) x * xval = SQUARE(num1 + num2); results in the equivalent statement ____.

A. val = num1 + (num2 * num1 + num2); B. val = (num1 + num2 * num1) + num2; C. val = (num1 + num2) * (num1 + num2); D. val = num1 + num2 * num1 + num2;

Computer Science & Information Technology