List the three factors which can cloud the comparison of algorithms performed by implementing the algorithms in Java and running the programs.
What will be an ideal response?
The three factors are differences in the implementation of the algorithms, differences in the computers used to run the programs, and differences in the test data.
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Analyze the following code:
``` import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.layout.StackPane; import javafx.stage.Stage; public class Test extends Application { @Override // Override the start method in the Application class public void start(Stage primaryStage) { StackPane pane = new StackPane(); Button bt1 = new Button("Java"); Button bt2 = new Button("Java"); Button bt3 = new Button("Java"); Button bt4 = new Button("Java"); pane.getChildren().addAll(bt1, bt2, bt3, bt4); Scene scene = new Scene(pane, 200, 250); primaryStage.setTitle("Test"); // Set the stage title primaryStage.setScene(scene); // Place the scene in the stage primaryStage.show(); // Display the stage } /** * The main method is only needed for the IDE with limited JavaFX * support. Not needed for running from the command line. */ public static void main(String[] args) { launch(args); } }``` a. One button is displayed with the text "Java". b. Two buttons are displayed with the same text "Java". c. Three buttons are displayed with the same text "Java". d. Four buttons are displayed with the same text "Java".
An IDE is a tool that facilitates
a. editing. c. compiling. b. debugging. d. all of the above
A(n) _______ arrow provides a visual clue to the relationship between two cells by pointing from the precedent cell to the dependent cell.
A. tracer B. outline C. index D. key
Not all computer and mobile devices have an operating system.
Answer the following statement true (T) or false (F)