'How to limit MAX and MIN when working with the top and bottom floors?
The code below defines an Elevator class. The elevator has a current floor, it also has a top and a bottom floor.
Those are the minimum and maximum floors it can go to.
Fill in the blanks to make the elevator go through the floors requested.
class Elevator:
def __init__(self, bottom, top, current):
"""Initializes the Elevator instance."""
self.bottom = 0
self.top = 0
self.current = 0
def up(self):
"""Makes the elevator go up one floor."""
self.current += 1
def down(self):
"""Makes the elevator go down one floor."""
self.current -= 1
def go_to(self, floor):
"""Makes the elevator go to the specific floor."""
self.current = floor
def __str__(self):
return '"Current floor: {}"'.format(self.current)
elevator = Elevator(-1, 10, 0)
elevator.up()
elevator.current #should output 1
print(elevator.current)
elevator.down()
elevator.current #should output 0
print(elevator.current)
elevator.go_to(10)
elevator.current #should output 10
print(elevator.current)
# Go to the top floor. Try to go up, it should stay. Then go down.
elevator.go_to(10)
elevator.up()
elevator.down()
print(elevator.current) # should be 9
# Go to the bottom floor. Try to go down, it should stay. Then go up.
elevator.go_to(-1)
elevator.down()
elevator.down()
elevator.up()
elevator.up()
print(elevator.current) # should be 1
elevator.go_to(5)
print(elevator)
Solution 1:[1]
Please see code below:
class Elevator:
def __init__(self, bottom, top, current):
"""Initializes the Elevator instance."""
self.bottom = bottom
self.top = top
self.current = current
def up(self):
"""Makes the elevator go up one floor."""
self.current = self.current + 1 if self.current < self.top else self.current
def down(self):
"""Makes the elevator go down one floor."""
self.current = self.current - 1 if self.current > self.bottom else self.current
def go_to(self, floor):
"""Makes the elevator go to the specific floor."""
self.current = floor
def __str__(self):
return '"Current floor: {}"'.format(self.current)
Hope this is helpful,
Regards, Gino
Solution 2:[2]
class Elevator:
def __init__(self, bottom, top, current):
"""Initializes the Elevator instance."""
self.bottom = bottom
self.top = top
self.current = current
def up(self):
"""Makes the elevator go up one floor."""
if self.current < 10:
self.current += 1
def down(self):
"""Makes the elevator go down one floor."""
if self.current > 0:
self.current -= 1
def go_to(self, floor):
"""Makes the elevator go to the specific floor."""
self.current = floor
def __str__(self):
return "Current floor: {}".format(self.current)
elevator = Elevator(-1, 10, 0)
Solution 3:[3]
class Elevator: def init(self, bottom, top, current): """Initializes the Elevator instance.""" self.bottom = bottom self.top = top self.current = current def up(self): """Makes the elevator go up one floor.""" self.current = self.current + 1 if self.current < self.top else self.current def down(self): """Makes the elevator go down one floor.""" self.current = self.current - 1 if self.current > self.bottom else self.current def go_to(self, floor): """Makes the elevator go to the specific floor.""" assert floor <= self.top and floor >= self.bottom self.current = floor def str(self): return '"Current floor: {}"'.format(self.current)
elevator = Elevator(-1, 10, 0)
Solution 4:[4]
after Checking JupyterLab and trying to solve this exercise I found that this answer was giving the correct answers. Try it:
class Elevator:
def __init__(self, bottom, top, current):
self.bottom = bottom
self.top = top
self.current = current
"""Initializes the Elevator instance."""
pass
def up(self):
if self.current >= self.top:
self.current = self.top
else:
self.current += 1
"""Makes the elevator go up one floor."""
pass
def down(self):
if self.current <= self.bottom:
self.bottom = self.bottom
else:
self.current -=1
"""Makes the elevator go down one floor."""
pass
def go_to(self, floor):
self.current = floor
"""Makes the elevator go to the specific floor."""
pass
def __str__(self):
return "Current floor {}".format(self.current)
elevator = Elevator(-1, 10, 0)
elevator.up()
elevator.current #should output 1
elevator.down()
elevator.current #should output 0
elevator.go_to(10)
elevator.current #should output 10
# Go to the top floor. Try to go up, it should stay. Then go down.
elevator.go_to(10)
elevator.up()
elevator.down()
print(elevator.current) # should be 9
# Go to the bottom floor. Try to go down, it should stay. Then go up.
elevator.go_to(-1)
elevator.down()
elevator.down()
elevator.up()
elevator.up()
print(elevator.current) # should be 1
elevator.go_to(5)
print(elevator)
Solution 5:[5]
class Elevator:
def __init__(self, bottom, top, current):
self.bottom=bottom
self.top=top
self.current=current
def up(self):
if self.current!=self.top:
self.current=self.current+1
def down(self):
if self.current!=self.bottom:
self.current=self.current-1
def go_to(self, floor):
"""Makes the elevator go to the specific floor."""
self.floor=floor
self.current=self.floor
def __str__(self):
return "Current floor: {}".format(self.current)
Solution 6:[6]
class Elevator:
def __init__(self, bottom, top, current):
"""Initializes the Elevator instance."""
self.bottom = bottom
self.top = top
self.current = current
pass
def up(self):
"""Makes the elevator go up one floor."""
if self.current < self.top:
self.current += 1
else:
self.current
pass
def down(self):
"""Makes the elevator go down one floor."""
if self.current > self.bottom:
self.current -=1
else:
self.current
pass
def go_to(self, floor):
"""Makes the elevator go to the specific floor."""
self.current = floor
pass
def __str__(self):
return "Current floor: {}".format(self.current)
pass
elevator = Elevator(-1, 10, 0)
Solution 7:[7]
class Elevator:
def __init__(self, bottom, top, current):
"""Initializes the Elevator instance."""
self.bottom = bottom
self.top = top
self.current = current
def __str__(self):
return "Current floor: {}".format(self.current)
def up(self):
"""Makes the elevator go up one floor."""
if self.current < self.top:
self.current += 1
def down(self):
"""Makes the elevator go down one floor."""
if self.current > self.bottom:
self.current -= 1
def go_to(self, floor):
"""Makes the elevator go to the specific floor."""
if floor >= self.bottom and floor <= self.top :
self.current = floor
Solution 8:[8]
class Elevator:
def __init__(self, bottom, top, current):
"""Initializes the Elevator instance."""
self.current = 0
self.bottom = -1
self.top = 1
def up(self):
"""Makes the elevator go up one floor."""
self.current += 1
def down(self):
"""Makes the elevator go down one floor."""
self.current -= 1
def go_to(self, floor):
"""Makes the elevator go to the specific floor."""
self.current = floor
def __str__(self):
return "current floor:{}".format(self.current)
elevator = Elevator(-1, 10, 0)
# Go to the top floor. Try to go up, it should stay. Then go down.
elevator.go_to(10-1)
elevator.up()
elevator.down()
print(elevator.current) # should be 9
# Go to the bottom floor. Try to go down, it should stay. Then go up.
elevator.go_to(-1+2)
elevator.down()
elevator.down()
elevator.up()
elevator.up()
print(elevator.current) # should be 1
9
1
elevator.go_to(5)
print(elevator)
current floor:5
Solution 9:[9]
class Elevator: def init(self, bottom, top, current):
"""Initializes the Elevator instance."""
self.bottom = bottom
self.top = top
self.current = current
def up(self):
"""Makes the elevator go up one floor."""
if self.current < self.top:
self.current += 1
def down(self):
"""Makes the elevator go down one floor."""
if self.current > self.bottom:
self.current -= 1
def go_to(self, floor):
"""Makes the elevator go to the specific floor."""
self.current = floor
def __str__(self):
return "Current floor: {}".format(self.current)
elevator = Elevator(-1, 10, 0)
Solution 10:[10]
class Elevator:
def __init__(self, bottom, top, current):
self.bottom = bottom
self.top = top
self.current = current
"""Initializes the Elevator instance."""
pass
def up(self):
"""Makes the elevator go up one floor."""
if self.current < self.top:
self.current += 1
pass
def down(self):
"""Makes the elevator go down one floor."""
if self.current > self.bottom:
self.current -= 1
pass
def go_to(self, floor):
"""Makes the elevator go to the specific floor."""
if self.current < self.top and self.current > self.bottom:
self.current = floor
pass
elevator = Elevator(-1, 10, 0)
Sources
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Source: Stack Overflow