控制台条形图使用循环，无图形JAVA

Question

目前正在编写一本书循环章节中的示例。基本上，有4个汽车销售商，每个人都应该输入他们售出的汽车数量。在输入的下方，他们的名字应该打印出来，并且与他们销售的汽车的行号相同（来自输入），但不能用数字，使用X或星号*。x或星形表示该数字输入。 这是到目前为止我的代码。我被困在打印X或星星旁边的名字。它打印在错误的名字旁边。有没有办法只使用循环而不使用数组

 import java.io.*;
 public class BarGraphCarSold {

public static void main(String[] args)throws IOException {
    BufferedReader buf = new BufferedReader(new InputStreamReader(System.in));

    System.out.print("Enter no of cars Bob sold >> ");
    int bobSold = Integer.parseInt(buf.readLine());
    System.out.print("Enter no of cars Pam sold >> ");
    int pamSold = Integer.parseInt(buf.readLine());
    System.out.print("Enter no of cars John sold >> ");
    int johnSold = Integer.parseInt(buf.readLine());
    System.out.print("Enter no of cars Kim sold >> ");
    int kimSold = Integer.parseInt(buf.readLine());
    System.out.println();
    System.out.println("Car Sales for Month");


    System.out.print("Bob  \n");
    System.out.print("Pam  \n");
    System.out.print("John  \n");
    System.out.print("Kim  ");

    for(int i = 1; i<=bobSold;i++){
        System.out.print("X");
     }  
   }
 }

OUTPUT
Enter no of cars Bob sold >> 5
Enter no of cars Pam sold >> 7
Enter no of cars John sold >> 4
Enter no of cars Kim sold >> 6

Car Sales for Month
Bob  
Pam  
John  
Kim  XXXXX

Answer 1

你很接近

试试这样的

System.out.print("Bob ");
for(int i = 0; i < bobSold; i++){
    System.out.print("X");
}
System.out.print("\n");

您正在打印每个名称，然后有换行符（\n），然后尝试打印X。因此，您需要先打印名称，然后打印X，然后打印新行。对于要用X打印出来的每个名称，都需要这样的循环

有很多不同的方法可以做到这一点。你可以有一个带有名字的String，然后循环并将X添加到string，然后一次性打印出来

String dealer = "Bob ";
for(int i = 0; i < bobSold; i++){
    dealer += "X";
}
dealer += "\n";
System.out.print(dealer);

使用数组

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) {
        BufferedReader buf = new BufferedReader(new InputStreamReader(System.in));
        String[] dealers = {"Bob","Pam","John","Kim"};
        int[] sales = new int[4];

        try {
            for(int i=0; i < dealers.length; i++){
                System.out.print("Enter number of cars "+dealers[i]+" sold: ");
                sales[i] = Integer.parseInt(buf.readLine());
            }
        }catch(IOException e){
            System.err.println("Error Reading input");
            System.err.println(e.getMessage());
        }
        System.out.println();
        System.out.println("Car Sales for Month");

        for(int i = 0; i < dealers.length; i++) {
            System.out.print(dealers[i]+" ");
            for(int j = 0; j < sales[i]; j++) {
                if(j == (sales[i]-1)) {
                    System.out.println("X");
                }else {
                    System.out.print("X");
                }
            }
        }
    }
}

玩得开心。继续

Answer 2

你需要为每个人打印X

System.out.print("Bob - ");
for(int i = 1; i<=bobSold;i++){
    System.out.print("X");
 }
System.out.print("\nPam - ");
for(int i = 1; i<=pamSold;i++){
    System.out.print("X");
 }
System.out.print("\nSame - ");
for(int i = 1; i<=samSold;i++){
    System.out.print("X");
 }
System.out.print("\nKim - ");
for(int i = 1; i<=kimSold;i++){
    System.out.print("X");
 }