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  • 预计球队比赛成绩

    预计球赛比赛成绩

     

     

     

     (一)模拟体育竞技分析

      b.排球比赛

      

        
    from random import random
    def printIntro():   
        print('这个程序模拟两个队伍A和B的排球竞技比赛')
        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('请输入队伍A的能力值(0-1):'))
        b = eval(input('请输入队伍B的能力值(0-1):'))
        n = eval(input('模拟比赛场次:'))
        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==1:
                winsB+=1
                continue
            elif scoreA==3:
                winsA+=1
                continue
            scoreA, scoreB = simOneGame5(probA, probB)
            if scoreA > scoreB:
                winsA += 1
            else:
                winsB += 1
        return winsA, winsB
    def simOneGame5(probA, probB):  
        scoreA, scoreB =0, 0
        serving = 'A'
        while not gameOver5(scoreA, scoreB):
            if serving == 'A':
                if random() > probA:
                    scoreB += 1
                    serving = 'B'
                else:
                    scoreA += 1
            else:
                if random() > probB:
                    scoreA += 1
                    serving = 'A'
                else:
                    scoreB += 1
        return scoreA, scoreB
    def simOneGame(probA, probB):
        scoreA, scoreB = 0, 0
        for i in range(4):
            s1, s2=0, 0
            while not gameOver(s1, s2):
                if random()<probA:
                    s1+=1
                elif random()<probB:
                    s2+=1
            if s1>s2:
                scoreA+=1
            else:
                scoreB+=1
        return scoreA, scoreB
    def gameOver5(c, d):    
        return (c>=15 and c-d>=2) or (d>=15 and d-c>=2)
    def gameOver(scoreA, scoreB):
        return (scoreA>=25 and scoreA-scoreB>=2) or (scoreB>=25 and scoreB-scoreA>=2)
    def printSummary(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(n,winsA, winsB)
    main()

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  • 原文地址:https://www.cnblogs.com/nicaihui/p/12743962.html
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