Hint: The program contains 5 more syntax bugs that prevent the code from compili

Question

Hint: The program contains 5 more syntax bugs that prevent the code from compiling and 1 more logical bug that will prevent the program from giving the correct answer. Each correction should require one line of code or less./** Simulate multiple 5-card hands to compute the probability of a flush. 02 * Each experiment simulates one random 5-card hand from a 52-card deck. 03 * Usage: java ComputeProbabilityOfFlush n 04 * n - the number of experiments to run 05 */ 06 public class ComputeProbabilityOfFlush { 07 // constants to represent the possible suits 08 public static int SPADES = 1001, HEARTS = 1002, DIAMONDS = 1003, CLUBS = 1004; 09 public static int INVALID_SUIT = -1000 10 public static void main(String[] args) { 11 numTrials = Integer.parseInt(args[0]); 12 13 // fill the deck with 52 cards, numbered 0-51: 14 // 0-12 will represent the 2 through ace of spades 15 // 13-25 will represent the 2 through ace of hearts 16 // 26-38 will represent the 2 through ace of diamonds 17 // 39-51 will represent the 2 through ace of clubs 18 int[] deck = new int[]; 19 for (int c = 0; c < 52; c++) { 20 deck[c] = c; 21 } 22 23 int numFlushes = 0; 24 // simulate a number of random hands of cards 25 for (int trial = 0; trial < numTrials; trial++) { 26 StdRandom.shuffle(deck); // randomize the order of the cards array 27 28 // draw five cards from the top of the deck 29 int[] hand = new int[5]; 30 for (int i = 0; i < 5; i++) { 31 hand[i] = deck[i]; 32 } 33 34 // track the total number of flushes 35 if (isFlush(hand)) numFlushes++; 36 } 37 System.out.println("Probability of a flush: " + numFlushes / numTrials); 38 } 39 // determines whether a 5-card hand contains a flush 40 public boolean isFlush(int[] hand) { 41 // check if all cards in the hand have the same suit 42 return (suit(hand[0]) == suit(hand[1]) && suit(hand[1]) == suit(hand[2]) && 43 suit(hand[2]) == suit(hand[3]) && suit(hand[3]) == suit(hand[4])); 44 } 45 // determines the suit of the given card 46 // returns the suit of the card (SPADES, HEARTS, DIAMONDS, CLUBS), 47 // or INVALID_SUIT if card is invalid 48 public static int suit(int[] card) { 49 if ( 0 <= card && card <= 12) return SPADES; 50 if (13 <= card && card <= 25) return HEARTS; 51 if (26 <= card && card <= 38) return DIAMONDS; 52 if (39 <= card && card <= 51) return CLUBS; 53 } 54 } The first bug has been found for you, and is listed as an example in the table. .

Explanation / Answer

/** Simulate multiple 5-card hands to compute the probability of a flush.
* Each experiment simulates one random 5-card hand from a 52-card deck.
* Usage: java ComputeProbabilityOfFlush n
* n - the number of experiments to run
*/

public class ComputeProbabilityOfFlush {
   // constants to represent the possible suits
   public static int SPADES = 1001, HEARTS = 1002, DIAMONDS = 1003, CLUBS = 1004;
   public static int INVALID_SUIT = -1000;
   public static void main(String[] args) {
       //numTrials = Integer.parseInt(args[0]);
       int numTrials = Integer.parseInt(args[0]);// Number of trails needs to be declared
       // fill the deck with 52 cards, numbered 0-51:
       // 0-12 will represent the 2 through ace of spades
       // 13-25 will represent the 2 through ace of hearts
       // 26-38 will represent the 2 through ace of diamonds
       // 39-51 will represent the 2 through ace of clubs
       //int[] deck = new int[];
       int[] deck = new int[52]; // size of deck needs to be specified
       for (int c = 0; c < 52; c++) {
           deck[c] = c;
       }
      
       int numFlushes = 0;
       // simulate a number of random hands of cards
       for (int trial = 0; trial < numTrials; trial++) {
           StdRandom.shuffle(deck); // randomize the order of the cards array
          
           // draw five cards from the top of the deck
           int[] hand = new int[5];
           for (int i = 0; i < 5; i++) {
               hand[i] = deck[i];
           }
          
           // track the total number of flushes
           if (isFlush(hand)) numFlushes++;
       }
       //System.out.println("Probability of a flush: " + numFlushes / numTrials);
       // Probability will alwyas be zero because of numerical division
       System.out.println("Probability of a flush: " + (double)numFlushes / numTrials);
   }
   // determines whether a 5-card hand contains a flush
   //public static boolean isFlush(int[] hand) {
   public static boolean isFlush(int[] hand) { // is flsh needs to be static to be called from main
       // check if all cards in the hand have the same suit
       return (suit(hand[0]) == suit(hand[1]) && suit(hand[1]) == suit(hand[2]) &&
               suit(hand[2]) == suit(hand[3]) && suit(hand[3]) == suit(hand[4]));
   }
   // determines the suit of the given card
   // returns the suit of the card (SPADES, HEARTS, DIAMONDS, CLUBS),
   // or INVALID_SUIT if card is invalid
   //public static int suit(int[] card) {
   public static int suit(int card) { // a specific card needs to be passed not array
       if ( 0 <= card && card <= 12) return SPADES;
       if (13 <= card && card <= 25) return HEARTS;
       if (26 <= card && card <= 38) return DIAMONDS;
       if (39 <= card && card <= 51) return CLUBS;
       return 0; // a return statement needs to be specified
   }
}

// Bold one are correction

// Underlined ones are issues

// Bold and italic is logical error fix

Please note that I am not considering StdRandom as an compilation issue assuming you have this already available with you.

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.