Mogelijk duplicaat:
hoe getallen omzetten in symbolen in java? bijvoorbeeld in plaats van 2 tot **, of 3 tot *** enz.
Hoe kan ik getallen omzetten in een histogram? Het histogram moet de staafdiagrammen van 2-12 weergeven op basis van hoe vaak die waarde is gerold. momenteel is mijn output als de tweede foto, maar het lijkt op de eerste. bedankt.
public static void main(String[] args) {
// TODO code application logic here
System.out.print("Please enter how many times you want to roll two dice?");
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int [] rolls = new int[n];
Random r1 = new Random();
Random r2 = new Random();
int dice1;
int dice2;
int two = 0;
int three = 0;
int four = 0;
int five = 0;
int six = 0;
int seven = 0;
int eight = 0;
int nine = 0;
int ten = 0;
int eleven = 0;
int twelve = 0;
for (int roll=0; roll < rolls.length; roll++)
{
dice2 = r2.nextInt(6)+1;
dice1 = r1.nextInt(6)+1;
System.out.println(roll + " The first dice rolled a " + dice1 + " the second dice rolled a " + dice2);
int sum;
sum = dice1 + dice2;
if (sum == 2)
two++;
if (sum == 3)
three++;
if (sum == 4)
four++;
if (sum == 5)
five++;
if (sum == 6)
six++;
if (sum == 7)
seven++;
if (sum == 8)
eight++;
if (sum == 9)
nine++;
if (sum == 10)
ten++;
if (sum == 11)
eleven++;
if (sum == 12)
twelve++;
}
System.out.println("Histogram of rolls:" );
System.out.println("2 occurred " + two + " times");
System.out.println("3 occurred " + three + " times");
System.out.println("4 occurred " + four + " times");
System.out.println("5 occurred " + five + " times");
System.out.println("6 occurred " + six + " times");
System.out.println("7 occurred " + seven + " times");
System.out.println("8 occurred " + eight + " times");
System.out.println("9 occurred " + nine + " times");
System.out.println("10 occurred " + ten + " times");
System.out.println("11 occurred " + eleven + " times");
System.out.println("12 occurred " + twelve + " times");
}
}
Antwoord 1, Autoriteit 100%
Hier zijn enkele verschillende stukjes code die u kunt gebruiken om dit te bereiken.
Creëer array
int[] histogram = new int[13];
Verhoog een positie in de array
histogram[id]++;
Afdrukhistogram
System.out.println("Histogram of rolls:" );
printHistogram(histogram);
Hier zijn ook enkele helperfuncties.
private void printHistogram(int[] array) {
for (int range = 0; range < array.length; range++) {
String label = range + " : ";
System.out.println(label + convertToStars(array[range]));
}
}
private String convertToStars(int num) {
StringBuilder builder = new StringBuilder();
for (int j = 0; j < num; j++) {
builder.append('*');
}
return builder.toString();
}
code moet worden gewijzigd als nodig.