from random import random
def printIntro (): # Print program introduction information
print ('This program simulates the volleyball competition of two teams A and B')
print ('Program operation requires the ability value of A and B (from 0 to 1 Between decimals) ')
def getInputs (): # get the program running parameters
a = eval (input (' Please enter team A's ability value (0-1): '))
b = eval (input (' please enter team B's ability value (0-1): '))
n = eval (input (' Simulation match times: '))
return a, b, n
def simOneGame (probA, probB): # Finals
scoreA, scoreB = 0, 0
serving = 'A'
while not gameOver (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 simfirstgame(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 simNGames(n, probA, probB): #进行N场比赛
winsA, winsB = 0, 0 # 初始化AB的胜场数
for i in range(n):
k, l=simfirstgame(probA, probB)
if k==1:
winsB+=1
continue
elif k==3:
winsA+=1
continue
scoreA, scoreB = simOneGame(probA, probB)
if scoreA > scoreB:
winsA += 1
else:
winsB += 1
return winsA, winsB
def gameOver(c, d): #比赛结束
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 ,winA, winB): #打印比赛结果
print ('Start of competitive analysis, simulate {} matches'.format (n))
print (' Team A wins {} matches, accounting for {: .2f}% '. format (winA, winA / n * 100 ))
print ('Team B wins {} games, accounting for {: .2f}%'. format (winB, winB / n * 100))
def main ():
printIntro ()
probA, probB, n = getInputs ( )
winsA, winsB = simNGames (n, probA, probB)
printSummary (n, winsA, winsB)
main ()
