a) In the Hi-Lo game, the player begins with a score of 1000. The player is prompted for the number of points to risk and a second prompt asks the player to choose either High or Low. The player's choice of either High or Low is compared to random number between 1 and 13, inclusive. If the number is between 1 and 6 inclusive, then it is considered "low". A number between 8 and 13 inclusive is "high". The number 7 is neither high nor low, and the player loses the points at risk. If the player had guessed correctly, the points at risk are doubled and added to the total points. For a wrong choice, the player loses the points at risk. Create a HiLo application based on this specification. Application output should look similar to: High Low Gane RULES Nunbers 8 through 13 are high Nunber ? is neither high or low You have 1800 points. Enter points to risk: 500
Java Code:
import java.util.Random;
import java.util.Scanner;
import java.util.regex.*;
public class Main {
public static void main(String[] args) {
final int iPs = 1000;
int p = iPs;
int count = 0;
do {
count++;
display(p);
int pFromUser = getpFromUser("Enter p to risk? ", p);
String option = getHiLoOption("Enter either Hi or Lo? ");
int MN = getMN(1, 13);
if (isWon(option, MN)) {
p += pFromUser;
System.out.println("Won");
} else {
p -= pFromUser;
System.out.println("Lost");
}
} while (p > 0);
report(iPs, count);
System.exit(0);
}
private static void report(int p, int count) {
String prompt = "It took %d number(s) of guess before running out of %,d ps.%n";
System.out.printf(prompt, count, p);
}
private static void display(int p) {
String prompt = "You have %d number of ps to risk.%n";
System.out.printf(prompt, p);
}
public static int getMN(int min, int max) {
int ans = 1;
Random rnd = new Random();
ans = Math.abs(rnd.nextInt() % (max - min)) + 1;
return ans;
}
private static int getpFromUser(String prompt, int p) {
System.out.print(prompt);
Scanner keyboard = new Scanner(System.in);
int ans = keyboard.nextInt();
if (ans > p) {
ans = p;
}
return ans;
}
public static String getHiLoOption(String prompt) {
String ans = "hi";
boolean done = false;
do {
System.out.println(prompt);
Scanner keyboard = new Scanner(System.in);
String option = keyboard.next();
if (isValid(option)) {
ans = option;
done = true;
} else {
System.out
.printf("Invalid option \"%s\" was entered, valid optons are either Hi or Lo. Try again.%n",
option);
}
} while (!done);
return ans;
}
private static boolean isValid(String option) {
boolean ans = false;
Pattern p = Pattern.compile("(hi|lo)", Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher(option);
ans = m.find();
return ans;
}
private static boolean isWon(String option, int guessNumber) {
boolean ans = false;
if (option.equalsIgnoreCase("hi") && (guessNumber >= 8)) {
ans = true;
} else if (option.equalsIgnoreCase("lo") && (guessNumber <= 6)) {
ans = true;
}
return ans;
}
}
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