在1到100之间生成1到300个数字并将每个数字放在字符串中时遇到问题 [英] Having issues with generating 1 to 300 numbers between 1 to 100 and placing each number in a String

问题描述

我正在尝试接受来自用户的1到300范围内的数字，然后生成输入的随机数量。然后，如果生成的数字在1到10的范围内，我将一个星号添加到一个字符串，然后我做同样的11到20等一直到100.虽然我不断收到错误说;预期in我的代码的结果部分。我想要实现的输出是：

I'm trying to accept a number in the range 1 to 300 from the user, then generate the amount of random numbers that was inputted. Then if the numbers generated are in the range 1 to 10, I add an asterisk to a String, then I do the same for 11 to 20 etc. all the way up to 100. Although I keep getting errors saying "; expected" in the results portion of my code. The output I'm trying to achieve is:

1到10 ****************

1 to 10 ****************

11至20 ******

11 to 20 ******

21至30 ************** *

21 to 30 ***************

31至40 ********************

31 to 40 ********************

41至50

51至60 ***********

51 to 60 ***********

61至70 ****************

61 to 70 ****************

71至80 ****

71 to 80 ****

81至90 *******

81 to 90 *******

91至100 **

91 to 100 **

上面的星号可能不等于100，但我试图在输出中显示100个星号，每个星号表示__到__范围内随机生成的数字。

The asterisks above may not add up to 100, but I'm trying to get 100 asterisks displayed in the output, each one representing a random generated number in the range __ to __.

我的代码如下。

import java.util.*;
public class histogramAsterisks
{
    public static void main(String[] args)
    {
        Scanner in = new Scanner(System.in);
        System.out.print("Please enter a number between the range 1 to 300: ");
        int input = Integer.parseInt(in.nextLine());
        int aNumber;
        String 1to10 = "", 11to20 = "", 21to30= "", 31to40 = "", 41to50 = ""; 51to50 = ""; 61to70 = ""; 71to80 = ""; 81to90 = ""; 91to100 = "", results = "";
        if(input < 1 || input > 300 || input == null)
            results = "Please enter a valid input in the range 1 to 300.";
        else
        {
            for(int i = 0; i < input; i++)
            {
                aNumber = (int) (Math.random() * 100 + 1);
                if(aNumber <= 10)               1to10   += "*";
                else if(aNumber <= 20)          11to20  += "*";
                else if(aNumber <= 30)          21to30  += "*";
                else if(aNumber <= 40)          31to40  += "*";
                else if(aNumber <= 50)          41to50  += "*";
                else if(aNumber <= 60)          51to60  += "*";
                else if(aNumber <= 70)          61to70  += "*";
                else if(aNumber <= 80)          71to80  += "*";
                else if(aNumber <= 90)          81to90  += "*";
                else                            91to100 += "*";
            }
        }
        results  = "1 to 10\t\t\t" + 1to10;
        results += "\n11 to 20\t\t\t" + 11to20;
        results += "\n21 to 30\t\t\t" + 21to30;
        results += "\n31 to 40\t\t\t" + 31to40;
        results += "\n41 to 50\t\t\t" + 41to50;
        results += "\n51 to 60\t\t\t" + 51to60;
        results += "\n61 to 70\t\t\t" + 61to70;
        results += "\n71 to 80\t\t\t" + 71to80;
        results += "\n81 to 90\t\t\t" + 81to90;
        results += "\n91 to 100\t\t\t" + 91to100;
        System.out.println(results);
    }
}

推荐答案

In你的String声明代码你使用了半冒号（;）而不是昏迷（，）来分离变量声明。改为以下行。还请更改变量名称。

In your code for String declaration you have used semi colon (;) instead of coma (,) for separation of variable declaration. Change as below line. And also please change variable names.

String 1to10 =，11to20 =，21to30 =，31to40 =，41to50 =，51to50 = ，61to70 =，71to80 =，81to90 =，91to100 =，结果=;

String 1to10 = "", 11to20 = "", 21to30= "", 31to40 = "", 41to50 = "", 51to50 = "", 61to70 = "", 71to80 = "",81to90 = "", 91to100 = "", results = "";

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