Question
Problem 4: [20 marks] Simulate the movement of an elevator (filename: Elevator.java ) Design an algorithm and then write a program called Elevator, which models
Problem 4: [20 marks] Simulate the movement of an elevator (filename: Elevator.java)
Design an algorithm and then write a program called Elevator, which models a simplified elevator.
- The elevator operates in a building with 9 floors. The labelling of the floors begins at 1.
- The user will request a floor by typing in an integer in the appropriate range. The elevator
you are modelling needs to move to the requested floor, displaying floor numbers and a
picture of an up/down arrow as it goes.
- The program should continue moving to new floors and prompting for a floor selection until the user enters a sentinel value of 0 instead of a floor number. When the sentinel value is entered, the program should exit.
- If the entered floor number is not valid, the user should be warned, and the user is asked to enter a floor number again.
A sample runs is given below:
o-------o
| 1 |
o-------o
The elevator is at Floor 1 now
Enter a floor number between 1 and 9, or enter 0 to quit: 5
The elevator is moving up from Floor 1 to 5
o-------o /\
| 5 | //\\
o-------o // \\
o-------o /\
| 4 | //\\
o-------o // \\
o-------o /\
| 3 | //\\
o-------o // \\
o-------o /\
| 2 | //\\
o-------o // \\
o-------o /\
| 1 | //\\
o-------o // \\
The elevator is at Floor 5 now
Enter a floor number between 1 and 9, or enter 0 to quit: 12
Invalid floor number. Try again.
Enter a floor number between 1 and 9, or enter 0 to quit: 3
The elevator is moving down from Floor 5 to 3
o-------o \\ //
| 5 | \\ //
o-------o \/
o-------o \\ //
| 4 | \\ //
o-------o \/
o-------o \\ //
| 3 | \\ //
o-------o \/
The elevator is at Floor 3 now
Enter a floor number between 1 and 9, or enter 0 to quit: 0
Thank you for using the elevator program. Goodbye!
Problem 4: [20 marks] Simulate the movement of an elevator (filename: Elevator.java)
Design an algorithm and then write a program called Elevator, which models a simplified elevator.
- The elevator operates in a building with 9 floors. The labelling of the floors begins at 1.
- The user will request a floor by typing in an integer in the appropriate range. The elevator
you are modelling needs to move to the requested floor, displaying floor numbers and a
picture of an up/down arrow as it goes.
- The program should continue moving to new floors and prompting for a floor selection until the user enters a sentinel value of 0 instead of a floor number. When the sentinel value is entered, the program should exit.
- If the entered floor number is not valid, the user should be warned, and the user is asked to enter a floor number again.
A sample runs is given below:
o-------o
| 1 |
o-------o
The elevator is at Floor 1 now
Enter a floor number between 1 and 9, or enter 0 to quit: 5
The elevator is moving up from Floor 1 to 5
o-------o /\
| 5 | //\\
o-------o // \\
o-------o /\
| 4 | //\\
o-------o // \\
o-------o /\
| 3 | //\\
o-------o // \\
o-------o /\
| 2 | //\\
o-------o // \\
o-------o /\
| 1 | //\\
o-------o // \\
The elevator is at Floor 5 now
Enter a floor number between 1 and 9, or enter 0 to quit: 12
Invalid floor number. Try again.
Enter a floor number between 1 and 9, or enter 0 to quit: 3
The elevator is moving down from Floor 5 to 3
o-------o \\ //
| 5 | \\ //
o-------o \/
o-------o \\ //
| 4 | \\ //
o-------o \/
o-------o \\ //
| 3 | \\ //
o-------o \/
The elevator is at Floor 3 now
Enter a floor number between 1 and 9, or enter 0 to quit: 0
Thank you for using the elevator program. Goodbye!
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