```
/*******************************
* Playing with analyzing coin tosses.
*
*     The current version of this program has a bug in it!
*
* Challenge: modify this program to count toss 20 coins many
* times, and count how many of those have 1 head, 2 heads, ...
* (Leave out all the the detailed 1:head printing I have below.)
* These numbers will form what's called a "Bell curve."
* And for a *really* good time, graph the resulting bell curve
* with spaces and * chars, on its side so it looks something like
*   1  *
*   2   *
*   3     *
*   ... etc.
* where the number of spaces before the "*" depends on how many
* times that number of heads turned up.
*
* @author  Jim mahoney
* @version 1.0, Oct 7, 10pm
*
****/

class CoinFlipping {

public static void main(String[] args){

int howMany = 20;
int counter = 1;
print(" Tossing a coin " + howMany + " times.");
while (counter<=howMany){
print(" " + counter + ": "
counter++;
}

// Debugging - why are we getting average = 0 ?
System.out.println(" howMany = " + howMany );

print(" Average number = " + headCount/howMany + ".");
}

// convert a boolean (true or false) to a String ("heads" or "tails")
public static String booleanToString(boolean x){
if (x) {
}
else {
return "tails";
}
}

public static boolean coinToss(){
// Can you find the Math.random documentation in the Java API ?
double randomNumber = Math.random(); // between 0 and 1
if (randomNumber>0.5) {
return true;
}
else {
return false;
}
}

// Print a line of dashes, i.e. " - - - - - - - - - "
public static void line(){
int iDashCount=20;
System.out.print(">");
while (iDashCount>0){
System.out.print(" -");
iDashCount--;
}
System.out.println(" ");
}

// I get tired of typing "System.out.println".
// So this lets me just type "print".
public static void print(String s){
System.out.println("> "+s);
}

}

```

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