Given the GVCoin class, complete the method flipForHeads() in the TossingCoins class that counts and returns the number of flips taken to achieve a desired number of heads. Method flipForHeads() has a GVCoin object and an integer representing the desired number of heads as parameters. Review the definition of "GVCoin.java" by clicking on the orange arrow. Note: For testing purposes, a GVCoin object is created in the main() method using a pseudo-random number generator with a fixed seed value. The program uses a seed value of 15 during development, but when submitted, a different seed value will be used for each test case. Refer to the textbook section on Random numbers to learn more about pseudo-random numbers. Ex: If the GVCoin object is created with a seed value of 15 and the desired number of heads is 100, then the method flipForHeads() returns 192 and the program outputs: Total number of flips for 100 heads: 192 code: Gvcoin.Java: import java.util.*; public class GVCoin { // true for heads, false for tails private boolean isHeads; private int flips, heads; private Random r; public GVCoin() { r = new Random(); heads = 0; flips = 0; isHeads = true; } public void flip() { isHeads = r.nextBoolean(); // Flip the coin by randomly choosing true / false flips++; // Increment flip count if(isHeads){ heads++; // Increment heads count if current flip results in heads } } public boolean isHeads() { return isHeads; // Return true if coin is currently heads } public String toString() { String str; str = "Flips: " + flips + " Heads: " + heads + " isHeads: " + isHeads; return str; // Return String representation of important values } public int numFlips() { return flips; // Return number of total flips } public int numHeads() { return heads; // Return number of total heads } public int numTails() { return flips - heads; // Return number of total tails } public void setToHeads(boolean h) { isHeads = h; } public GVCoin(int seed) { // Create the coin with a random seed this(); r = new Random(seed); } } Tossingcoins.java code: public class TossingCoins { public int flipForHeads(GVCoin coin, int goal) { /* Type your code here. */ } public static void main(String[] args) { TossingCoins game = new TossingCoins(); GVCoin coin = new GVCoin(15); // Create a GVCoin object with seed value 15 int numHeads = 100; // Desire 100 heads int totalFlips; totalFlips = game.flipForHeads(coin, numHeads); System.out.println("Total number of flips for 100 heads: " + totalFlips); } }
6.19
Given the GVCoin class, complete the method flipForHeads() in the TossingCoins class that counts and returns the number of flips taken to achieve a desired number of heads. Method flipForHeads() has a GVCoin object and an integer representing the desired number of heads as parameters. Review the definition of "GVCoin.java" by clicking on the orange arrow.
Note: For testing purposes, a GVCoin object is created in the main() method using a pseudo-random number generator with a fixed seed value. The program uses a seed value of 15 during development, but when submitted, a different seed value will be used for each test case. Refer to the textbook section on Random numbers to learn more about pseudo-random numbers.
Ex: If the GVCoin object is created with a seed value of 15 and the desired number of heads is 100, then the method flipForHeads() returns 192 and the program outputs:
Total number of flips for 100 heads: 192
code:
Gvcoin.Java:
import java.util.*;
public class GVCoin {
// true for heads, false for tails
private boolean isHeads;
private int flips, heads;
private Random r;
public GVCoin() {
r = new Random();
heads = 0;
flips = 0;
isHeads = true;
}
public void flip() {
isHeads = r.nextBoolean(); // Flip the coin by randomly choosing true / false
flips++; // Increment flip count
if(isHeads){
heads++; // Increment heads count if current flip results in heads
}
}
public boolean isHeads() {
return isHeads; // Return true if coin is currently heads
}
public String toString() {
String str;
str = "Flips: " + flips + " Heads: " + heads + " isHeads: " + isHeads;
return str; // Return String representation of important values
}
public int numFlips() {
return flips; // Return number of total flips
}
public int numHeads() {
return heads; // Return number of total heads
}
public int numTails() {
return flips - heads; // Return number of total tails
}
public void setToHeads(boolean h) {
isHeads = h;
}
public GVCoin(int seed) { // Create the coin with a random seed
this();
r = new Random(seed);
}
}
Tossingcoins.java
code:
public class TossingCoins {
public int flipForHeads(GVCoin coin, int goal) {
/* Type your code here. */
}
public static void main(String[] args) {
TossingCoins game = new TossingCoins();
GVCoin coin = new GVCoin(15); // Create a GVCoin object with seed value 15
int numHeads = 100; // Desire 100 heads
int totalFlips;
totalFlips = game.flipForHeads(coin, numHeads);
System.out.println("Total number of flips for 100 heads: " + totalFlips);
}
}
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