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Category > Programming Posted 28 Apr 2017 My Price 9.00

Turn # Number of wins

Using below code, incorporate new code to answer:

Answer c) and e) with your conclusions expressed as literal text output from your program to the IDE console.

Example output:
Turn #  Number of wins on that turn
     1       222768
     2        77103
     3        54910
     4        39173
     5        28275
     6        20174
     7        14454
     8        10285
     9         7364
    10         5257
    11         3862
    12         2715
    13         1951
    14         1437
    15         1037
    16          765
    17          550
    18          356
    19          276
    20+         801

Turn #  Number of losses on that turn
     1       111052
     2       111027
     3        79389
     4        57512
     5        41107
     6        29404
     7        21442
     8        15393
     9        11179
    10         8042
    11         5600
    12         4258
    13         3145
    14         2175
    15         1579
    16         1142
    17          794
    18          568
    19          467
    20+        1212

Total Number of wins: 493513  Total number of losses: 506487
Probability of winning: 0.493513

c) The probability of winning is about (your estimate%), which is very fair. You are just as likely to win as lose.

d) Average number of turns per game: 3.378512

e) You answer as literal output.

 

// Fig. 6.8: e_18.java

// Craps class simulates the dice game craps.

import java.security.SecureRandom;

 

public class e_18

{

 

// create secure random number generator for use in method rollDice

private static final SecureRandom randomNumbers = new SecureRandom();

 

// enum type with constants that represent the game status

private enum Status {CONTINUE, WON, LOST};

 

// constants that represent common rolls of the dice

private static final int SNAKE_EYES = 2;

private static final int TREY = 3;

private static final int SEVEN = 7;

private static final int YO_LEVEN = 11;

private static final int BOX_CARS = 12;

 

// plays one game of craps

public static void main(String[] args)

{

int myPoint = 0; // point if no win or loss on first roll

Status gameStatus; // can contain CONTINUE, WON or LOST

 

int sumOfDice = rollDice(); // first roll of the dice

 

// determine game status and point based on first roll

switch (sumOfDice)

{

case SEVEN: // win with 7 on first roll

case YO_LEVEN: // win with 11 on first roll

gameStatus = Status.WON;

break;

case SNAKE_EYES: // lose with 2 on first roll

case TREY: // lose with 3 on first roll

case BOX_CARS: // lose with 12 on first roll

gameStatus = Status.LOST;

break;

default: // did not win or lose, so remember point

gameStatus = Status.CONTINUE; // game is not over

myPoint = sumOfDice; // remember the point

System.out.printf("Point is %d%n", myPoint);

break;

}

 

// while game is not complete

while (gameStatus == Status.CONTINUE) // not WON or LOST

{

sumOfDice = rollDice(); // roll dice again

 

// determine game status

if (sumOfDice == myPoint) // win by making point

gameStatus = Status.WON;

else

if (sumOfDice == SEVEN) // lose by rolling 7 before point

gameStatus = Status.LOST;

}

 

// display won or lost message

if (gameStatus == Status.WON)

System.out.println("Player wins");

else

System.out.println("Player loses");

}

 

// roll dice, calculate sum and display results

public static int rollDice()

{

// pick random die values

int die1 = 1 + randomNumbers.nextInt(6); // first die roll

int die2 = 1 + randomNumbers.nextInt(6); // second die roll

 

int sum = die1 + die2; // sum of die values

 

// display results of this roll

System.out.printf("Player rolled %d + %d = %d%n",

die1, die2, sum);

 

return sum;

}

}

Answers

(11)
Status NEW Posted 28 Apr 2017 12:04 AM My Price 9.00

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