如何在java中将数字转换为符号？ 例如，而不是2到**，或3到***等。

可能重复：
在java中重复String的简单方法

如何将数字转换为符号？ 我的任务的最后一部分是这样的：直方图应根据该值的滚动次数显示2-12的条形图。如下所示： 目前我的输出是这样的：

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"); } 

}

Answer 1

创建一个名为toStars的附加函数

 public String toStars(int number) { StringBuilder temp = new StringBuilder(); for(int i=0;i 

然后，改变你的打印语句：

 System.out.println("2 : " + toStars(two)); 

Answer 2

 int n = 10; for(int i = 0; i < n; i++) { System.out.print("*"); } 

该代码将打印'*'10次。