CSP Robot Questions Review

A robot starts in a grid facing north (B3). What is the robot's location and direction after the following program is executed?

data = ["F", "F", "R", "F", "L", "F", "R", "R", "F"]

FOR EACH move IN data

{

IF ( move = "F" AND CAN_MOVE(forward) )

{

MOVE_FORWARD()

}

ELSE IF (move = "R"){

rotate_right()

}

ELSE IF ( move = "L") {

rotate_left()

}

}

• 
• 
• 
• 

A spinner is divided into three sections. The sector labeled Red is four times as large as each of the sectors labeled Blue and Yellow, which are of equal size. Which of the following correctly simulates the spinner?

• 
• 
• 
• 

Which of the following code options can be used to move the robot (the black triangle) to the gray square?

• REPEAT 2 TIMES:

  {

  MOVE_FORWARD ()

  ROTATE_LEFT ()

  MOVE_FORWARD ()

  MOVE_FORWARD ()

  ROTATE_LEFT ()

  }

• REPEAT 4 TIMES:

  {

  ROTATE_LEFT ()

  MOVE_FORWARD ()

  ROTATE_RIGHT ()

  MOVE_FORWARD ()

  ROTATE_RIGHT ()

  MOVE_FORWARD ()

  ROTATE_LEFT ()

  }

• REPEAT 3 TIMES:

  {

  MOVE_FORWARD ()

  MOVE_FORWARD ()

  ROTATE_RIGHT ()

  MOVE_FORWARD ()

  }

• REPEAT 3 TIMES:

  {

  MOVE_FORWARD ()

  MOVE_FORWARD ()

  ROTATE_LEFT ()

  MOVE_FORWARD ()

  }

Starting in the bottom left corner facing right, where will the robot end up after the following code is called with: controlRobot([2, 1, 3, 6])?

• 
• 
• 
• 

The following question uses a robot in a grid of squares. The robot is represented by a triangle, which is initially facing right. Which of the following code segments will move the robot to the gray square?

• 
• 
• 
• 

A programming language that captures only the most primitive operations available to a machine is a(n)?

• Algorithm
• High Level Programming Language
• Low Level Programming Langauge

Which of the following images shows the path and ending location of the robot that will result from executing the code above. The starting location of the robot is shown as dotted triangle for cases where the robot does not start and end at the same location.

REPEAT 4 TIMES {

MOVE_FORWARD()

MOVE_FORWARD()

MOVE_FORWARD()

ROTATE_RIGHT(90)

MOVE_FORWARD()

ROTATE_RIGHT(90)

MOVE_FORWARD()

ROTATE_RIGHT(90)

}

• 
• 
• 
• 

Consider the following incorrect program, which is intended to move the robot around the perimeter of a grid, as indicated by the drawing below. The starting position and direction of the robot is indicated in the diagram.

Line 1: 4 TIMES

Line 2: {

Line 3: MOVE_FORWARD()

Line 4: ROTATE_RIGHT()

Line 5: MOVE_FORWARD()

Line 6: MOVE_FORWARD()

Line 7: MOVE_FORWARD()

Line 8: MOVE_FORWARD()

Line 9: ROTATE_RIGHT()

Line 10: }

Given the options below, which lines should be removed so the program will work as intended?

• Line 3 and Line 4

• Lines 5, 6, 7, 8 and 9

• Line 8 and Line 9

• Line 9

Which of the following images represents the most likely output produced by the code segment given below?

• 
• 
• 
• 
• 

Why are these icons a good use of abstraction?

• They tell us what they mean without needing to use the name

• They are difficult to understand

• They don't explain what they are