Simulates the tennis game
Program Plan:
- Import the header file.
- Define the “main” method.
- Call the “printIntro ()” method
- Call the “getInputs ()” method.
- Call the “simNMatches ()” method.
- Call the “printSummary ()” method.
- Define the “printIntro()” method.
- Print the intro statements.
- Define the “getInputs()” method.
- Get the player A possible for win from the user.
- Calculate the “probA” and “probB” values.
- Get how many games to simulate from the user.
- Define the “simNMatches()” method.
- Set the values
- Iterate “i” until it reaches “n” value
- Call the methods
- Check “matchA” is greater than “matchB”
- Increment the “winsA” value
- Otherwise, increment the “winsB” value.
- Return the values.
- Define the “simOneMatch ()” method
- Set the values
- Check the condition.
- Call the “simOneGame ()” method.
- Check “setA” is greater than “setB”
- Increment the “matchA” value
- Otherwise, increment the “matchB” value
- Return the results
- Define the “matchOver ()” method
- Check “a” or “b” is greater than 3
- Return true
-
- Otherwise, return false.
-
- Return true
- Check “a” or “b” is greater than 3
- Define the “simOneSet ()” method
- Call the method
- Set the values
- Check the condition.
- Check “scoreA” is greater than “scoreB”
- Increment the “setA” value
- Otherwise, increment the “setB” value
-
- Return the results
-
- Check “scoreA” is greater than “scoreB”
- Define the “setOver ()” method
- Check “a” or “b” is equal to 7
- Return true
-
- Check “a” or “b” is greater than or equal to 6
-
- Check “a-b” is greater than or equal to 2
- Return true
- Otherwise, return false
- Check “a-b” is greater than or equal to 2
- Otherwise, return false.
-
- Return true
- Check “a” or “b” is equal to 7
- Define the “simOneGame ()” method
- Set the values
- Check the condition
- Check “random ()” is less than “probA”
- Increment the “scoreA” value
-
- Otherwise, increment the “scoreB” value
- Return the results.
-
- Increment the “scoreA” value
- Check “random ()” is less than “probA”
- Define the “gameOver ()” method
- Check “a” or “b” is greater than or equal to 4
- Check “a-b” is greater than or equal to 2
- Return true
-
- Otherwise, return false
- Otherwise, return false.
-
- Return true
- Check “a-b” is greater than or equal to 2
- Check “a” or “b” is greater than or equal to 4
- Define the “printSummary ()” method
- Display the results.
- Call the main method.
The program is to simulate a game of tennis.
Explanation of Solution
Program:
#import the header file
from random import random
#definition of main method
def main():
#call the method
printIntro()
#call the method and store it in the variables
probA, probB, n = getInputs()
#call the method and store it in the variables
winsA, winsB = simNMatches(n, probA, probB)
#call the method
printSummary(winsA, winsB, n)
#definition of "printIntro" method
def printIntro():
#display the statements
print("This program simulates a series of tennis matches between player")
print('"A" and player "B". The abilities of each player are')
print("represented by percentage chance of winning a volley. The")
print("percentages add up to 100.")
print()
print("Game")
print("As in real tennis, each game is played through 4 points")
print("(Love, 15, 30, 40, game) where the player must win by two.")
print("Players can score on either serve.")
print()
print("Set")
print("A set is won when a player reaches 6 victorious games, and has a")
print("lead of two. If for example, sets reach 6-5, the players will play")
print("another round. If the score reaches 6-6, there will be a")
print("tiebreaking game.")
print()
print("Match")
print("A Match is won when a player reaches his/her 3rd victorious set.")
print("No winning by two, no tie-breaker, for the purposes of this simulation")
print()
#definition of "getInputs" method
def getInputs():
#get the player A wins a serve
probA = eval(input("What is the percent prob. player A wins a volley? "))
#calculate the values
probA = probA / 100
probB = 1 - probA
#get the input from the user
n = eval(input("How many games to simulate? "))
return probA, probB, n
#definition of "simNMatches" method
def simNMatches(n, probA, probB):
#set the values
winsA = winsB = 0
#iterate until "n" value
for i in range(n):
#call the method and store it in the variables
matchA, matchB = simOneMatch(probA, probB)
#check "matchA" is greater than "matchB"
if matchA > matchB:
#increment the value
winsA = winsA + 1
#otherwise
else:
#increment the value
winsB = winsB + 1
#return the results
return winsA, winsB
#definition of "simOneMatch" method
def simOneMatch(probA, probB):
#set the values
matchA = matchB = 0
#check the condition
while not matchOver(matchA, matchB):
#call the method and store it in the variables
setA, setB = simOneSet(probA, probB)
#check "setA" is greater than "setB"
if setA > setB:
#increment the value
matchA = matchA + 1
#otherwise
else:
#increment the value
matchB = matchB + 1
#return the results
return matchA, matchB
#definition of "matchOver" method
def matchOver(a, b):
#check "a" or "b" is greater than 3
if a > 3 or b > 3:
#return the result
return True
else:
#return the result
return False
#definition of "simOneSet" method
def simOneSet(probA, probB):
#call the method and store it in the variables
scoreA, scoreB = simOneGame(probA, probB)
#set the values
setA = setB = 0
#check the condition
while not setOver(setA, setB):
#check "scoreA" is greater than "scoreB"
if scoreA > scoreB:
#increment the value
setA = setA + 1
else:
#increment the value
setB = setB + 1
#return the results
return setA, setB
#definition of "setOver" method
def setOver(a, b):
#check "a" and "b" is equal to 7
if a == 7 or b == 7:
#return the result
return True
#check "a" or "b" is greater than or equal to 6
elif a >= 6 or b >= 6:
#check "a - b" is greater than or equal to 2
if abs(a-b) >=2:
#return the result
return True
else:
#return the result
return False
else:
#return the result
return False
#definition of "simOneGame" method
def simOneGame(probA, probB):
#set the values
scoreA = scoreB = 0
#check the condition
while not gameOver(scoreA, scoreB):
#check "random()" is less than "probA"
if random() < probA:
#increment the value
scoreA = scoreA + 1
else:
#increment the value
scoreB = scoreB + 1
#return the result
return scoreA, scoreB
#definition of "gameOver" method
def gameOver(a, b):
#check "a" or "b" is greater than or equal to 4
if a >= 4 or b >= 4:
#check "a - b" is greater than or equal to 2
if abs(a-b) >=2:
#return the result
return True
else:
#return the result
return False
else:
#return the result
return False
#definition of "printSummary" method
def printSummary(winsA, winsB, n):
#display the results
print("\nGames simulated: ", n)
print("Wins for A: {0} ({1:0.1%})".format(winsA, winsA/n))
print("Wins for B: {0} ({1:0.1%})".format(winsB, winsB/n))
#call the main method
if __name__ == '__main__': main()
Output:
This program simulates a series of tennis matches between player
"A" and player "B". The abilities of each player are
represented by percentage chance of winning a volley. The
percentages add up to 100.
Game
As in real tennis, each game is played through 4 points
(Love, 15, 30, 40, game) where the player must win by two.
Players can score on either serve.
Set
A set is won when a player reaches 6 victorious games, and has a
lead of two. If for example, sets reach 6-5, the players will play
another round. If the score reaches 6-6, there will be a
tiebreaking game.
Match
A Match is won when a player reaches his/her 3rd victorious set.
No winning by two, no tie-breaker, for the purposes of this simulation
What is the percent prob. player A wins a volley? 50
How many games to simulate? 10
Games simulated: 10
Wins for A: 7 (70.0%)
Wins for B: 3 (30.0%)
Want to see more full solutions like this?
Chapter 9 Solutions
Python Programming: An Introduction to Computer Science, 3rd Ed.
- Computer architecture and computer object-oriented design are not the same thing. There is a difference between the two.arrow_forwardObject oriented programming vs. procedural programming — a thorough explanation of the difference between the two.arrow_forwardDefine object-oriented and procedural programming in detail.arrow_forward
- Object-oriented programming and design patterns need to be linked together.arrow_forwardDesign patterns and object-oriented programming need further explanation.arrow_forwardObject-Oriented Programming and Procedural Programming are compared and contrasted. What are the most important personality traits for a great programmer to possess?arrow_forward
- java language design a Java program for International Student Management. The source code should include the inner class, package name, and more features in this course. For each student,, you can provide the Student ID, full name, major, grade, gender, nationality, etc.arrow_forwardThere is a connection between object-oriented programming and design patterns that has to be broken down into its component parts in more depth.arrow_forwardDistinguish between object-oriented and procedural programming and elaborate on the differences between the two.arrow_forward
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education