比赛模拟
1)模拟体育竞技分析:(不同学号选做不同题目,必做题)
b.采用排球比赛规则(学号尾号为4,5,6同学必做及格题)。赛制规定:
前4局比赛采用25分制,每个队只有赢得至少25分,并同时超过对方2分时 ,才胜1局。
正式比赛采用5局3胜制,决胜局的比赛采用15分制,一队先得8分后,两队交换场区,按原位置顺序继续比赛到结束。
在决胜局(第五局)之比赛,先获15分并领先对方2分为胜。
from random import random def printIntro(): print("36号程序员的程序模拟两个选手A和B的排球比赛") print("程序需要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 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 gameOver1(a,b): return (a>=25 and a-b>2) or (b>=25 and b-a>2) def gameOver2(a,b): return (a>=15 and a-b>2) or (b>=15 and b-a>2) def simOneGame(probA,probB): for i in range (5): winsA,winsB=0,0 scoreA,scoreB=0,0 serving="A" while not gameOver1(scoreA,scoreB): if serving=="A": if random()<probA: scoreA+=1 else: scoreB+=1 serving="B" else: if random()<probB: scoreB+=1 else: serving="A" scoreA+=1 if scoreA>scoreB: winsA+=1 else: winsB+=1 if winsA==3 or winsB==3: break if winsA==2 and winsB==2: simtowGame(probA,probB) return winsA,winsB def simtowGame(probA,probB): for i in range (1): scoreA,scoreB=0,0 serving="A" while not gameOver2(scoreA,scoreB): if serving=="A": if random()<probA: scoreA+=1 else: scoreB+=1 serving="B" else: if random()<probB: scoreB+=1 else: serving="A" scoreA+=1 return scoreA,scoreB 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 main(): printIntro() probA,probB,n=getInputs() winsA,winsB=simNGames(n,probA,probB) printSummary(winsA,winsB) main()