Each day a plant is growing by upSpeed meters. Each night that plant's height decreases by downSpeed meters due to the lack of sun heat. Initially, plant is 0 meters tall. We plant the seed at the beginning of a day. We want to know when the height of the plant will reach a certain level.

Example

For upSpeed = 100downSpeed = 10, and desiredHeight = 910, the output should be
growingPlant(upSpeed, downSpeed, desiredHeight) = 10.

我的解答:

import math
def growingPlant(upSpeed, downSpeed, desiredHeight):
if upSpeed > desiredHeight:
return 1
return math.ceil((desiredHeight - upSpeed) / (upSpeed - downSpeed)) + 1
一样滴

膜拜大佬

05-02 05:19