自顶向下
代码:
import random
def printIntro():
print("这个程序模拟量个选手A和B的某种竞技比赛")
print("程序运行需要A和B的能力值(以0到1之间的小数表示)")
def getInputs():
a = eval(input("请输入选手A的能力值(0-1): "))
b = eval(input("请输入选手B的能力值(0-1): "))
n = eval(input("模拟比赛的场次: "))
return a, b, n
def printSummary(winsA, winsB):
n = winsA + winsB
print("竞技分析开始, 共模拟{}场比赛".format(n))
print("选手A获胜{}场比赛, 占比{:0.1%}".format(winsA, winsA/n))
print("选手B获胜{}场比赛, 占比{:0.1%}".format(winsB, winsB/n))
def gameOver(a, b):
return a == 15 or b == 15
def simOneGame(probA, probB):
scoreA, scoreB = 0, 0
serving = "A"
while not gameOver(scoreA, scoreB):
if serving == "A":
if random.random() < probA:
scoreA += 1
else:
serving = "B"
else:
if random.random() < probB:
scoreB += 1
else:
serving = "A"
return scoreA, scoreB
def simNGames(n ,probA, probB):
winsA, winsB = 0, 0
for i in range(n):
scoreA, scoreB = simOneGame(probA, probB)
if scoreA > scoreB:
winsA += 1
else:
winsB += 1
return winsA, winsB
def main():
printIntro()
probA, probB, n = getInputs()
winsA, winsB = simNGames(n, probA, probB)
printSummary(winsA, winsB)
main()
输出:
这个程序模拟量个选手A和B的某种竞技比赛
程序运行需要A和B的能力值(以0到1之间的小数表示)
请输入选手A的能力值(0-1): 0.45
请输入选手B的能力值(0-1): 0.50
模拟比赛的场次: 1000
竞技分析开始, 共模拟1000场比赛
选手A获胜370场比赛, 占比37.0%
选手B获胜630场比赛, 占比63.0%