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数组和打印语句/java

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数组和打印语句/java,java,Java,我需要制作一个程序，要求用户输入车主目前使用的卡车数量，卡车是“大”还是“小”，并基本打印卡车的容量。如果用户在使用else语句后没有输入small或large，我会遇到问题。教授希望我们让用户再试一次。此外，我对如何打印结果感到困惑，尤其是如果用户输入的卡车超过2辆 这是我的密码： import java.util.Arrays; import java.util.Scanner; public class TomTrucking { /* * Complete here if you

我需要制作一个程序，要求用户输入车主目前使用的卡车数量，卡车是“大”还是“小”，并基本打印卡车的容量。如果用户在使用else语句后没有输入small或large，我会遇到问题。教授希望我们让用户再试一次。此外，我对如何打印结果感到困惑，尤其是如果用户输入的卡车超过2辆

这是我的密码：

import java.util.Arrays;
import java.util.Scanner;

public class TomTrucking {


/* 
* Complete here if you are using class variables      
*/

    public static void main(String[]args){

        Scanner input = new Scanner(System.in);

        System.out.println("How many trucks are operating today (Number of trucks must be 2 or greater)? :");
        int t1 = input.nextInt();


        if(t1 < 2) {
            System.out.println("You entered a value less than 2 for number of trucks.");
            System.out.println("Terminating program. ");
            System.exit(0);
        }else {
            double crates = 0;
            double crates1 = 0;

            String truck;
            int i=0;

            double array[] = new double[t1];
            double array1[] = new double[t1];
            for( i = 0; i < array.length; i++ ) {

                System.out.println("What is the size of truck " + (i+1) + "(large trucks max crates = 100, small trucks max crates = 10)? ");
                truck = input.next();

                while(!true) {
                    if(truck.equals("large")) {
                        System.out.println("What is the actual number of crates that truck " + (i+1) + " is hauling today (Truck 1 max crates is 100)? ");
                        crates = input.nextDouble();

                        boolean ok = true;
                        array[i] = (crates/100);


                    }else if(truck.equals("small")){
                        System.out.println("What is the actual number of crates that truck " + (i+1) + " is hauling today (Truck 2 max crates is 10)? ");
                        crates1 = input.nextDouble();

                        boolean ok = true;
                        array1[i] = (crates1/10)*100;


                    }else {
                        System.out.println("Enter either large or small: ");

                        boolean ok = false;


                    }
                }




                System.out.println("**Entry for all trucks completed**");    




                System.out.println("Truck " + (i-1) + " max: 100 actual: " + crates + " capacity at: " + (array[i-2]) + "%");
                System.out.println("Truck " + (i) + " max: 10 actual: " + crates1 + " capacity at: " + (array1[i-2]) + "%");

            }
        }
    }    
}

导入java.util.array；
导入java.util.Scanner；
公营货车运输{
/* 
*如果使用类变量，请在此处完成
*/
公共静态void main（字符串[]args）{
扫描仪输入=新扫描仪（System.in）；
System.out.println（“今天有多少辆卡车在运行（卡车数量必须为2辆或更多）？：”；
int t1=input.nextInt（）；
如果（t1<2）{
System.out.println（“您输入的卡车数量值小于2”）；
System.out.println（“终止程序”）；
系统出口（0）；
}否则{
双板条箱=0；
双板条箱1=0；
缆车；
int i=0；
双数组[]=新的双数组[t1]；
双阵列1[]=新双阵列[t1]；
对于（i=0；i
首先，while循环的条件是

while(!true) {
这意味着循环中的代码永远不会处理。你可能是说

while(!ok) {
这意味着您必须在循环之外声明
ok

其次，不要使用
System.exit（）
。这被认为是坏习惯。使用布尔标志控制流

第三，我建议您使用适当的缩进重新格式化代码，并使用有意义的变量名称（例如
array
和
array1
）。这将帮助您发现错误并帮助我们了解代码。此外，将代码分解为逻辑单元，并将它们放入单独的方法中。例如，一种方法处理用户输入，另一种方法验证用户输入，另一种方法用于计算，最后一种方法用于显示结果。

首先，while循环的条件是

while(!true) {
这意味着循环中的代码永远不会处理。你可能是说

while(!ok) {
这意味着您必须在循环之外声明
ok

其次，不要使用
System.exit（）
。这被认为是坏习惯。使用布尔标志控制流

第三，我建议您使用适当的缩进重新格式化代码，并使用有意义的变量名称（例如
array
和
array1
）。这将帮助您发现错误并帮助我们了解代码。此外，将代码分解为逻辑单元，并将它们放入单独的方法中。例如，一种方法处理用户输入，另一种方法验证用户输入，另一种方法用于计算，最后一种方法用于显示结果。

我发现还有一些问题，您可以尝试

    public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    System.out.println("How many trucks are operating today (Number of trucks must be 2 or greater)? :");
    int totalTrucks = input.nextInt();

    if (totalTrucks < 2) {
        System.out.println("You entered a value less than 2 for number of trucks.");
        System.out.println("Terminating program. ");
        System.exit(0);
    } else {
        HashMap<Integer, Double> smallTrucks = new HashMap();
        HashMap<Integer, Double> largeTrucks = new HashMap();

        for (int i = 0; i < totalTrucks; i++) {

            System.out.println("What is the size of truck " + (i + 1) + "(large trucks max crates = 100, small trucks max crates = 10)? ");
            String truckSize = input.next();
            boolean repeatLoop = true;

            while (repeatLoop) {
                if (truckSize.equals("large")) {
                    System.out.println("What is the actual number of crates that truck " + (i + 1) + " is hauling today (Truck 1 max crates is 100)? ");
                    Double crates = input.nextDouble();
                    largeTrucks.put(i, crates);
                    repeatLoop = false;
                } else if (truckSize.equals("small")) {
                    System.out.println("What is the actual number of crates that truck " + (i + 1) + " is hauling today (Truck 2 max crates is 10)? ");

                    boolean sizeWrong=true;
                    while (sizeWrong) {
                        Double crates = input.nextDouble();
                        if (crates > 10) {
                            System.out.println("Small Truck max crates is 10,Please enter size again ");
                            repeatLoop = true;
                            continue;
                        }
                        sizeWrong=false;
                        smallTrucks.put(i, crates);

                    }
                    repeatLoop = false;
                } else {
                    System.out.println("Enter either large or small: ");
                }
            }
        }
        System.out.println("**Entry for all trucks completed**");
        for (int i = 0; i < totalTrucks; i++) {
            Double maxTruckSize = smallTrucks.get(i);

            if (maxTruckSize != null) {
                System.out.println("Truck " + (i + 1) + " max: 100 actual: " + maxTruckSize + " capacity at: " + maxTruckSize / 100 + "%");
            }else
                System.out.println("Truck " + (i + 1) + " max: 10 actual: " + smallTrucks.get(i)+ " capacity at: " + maxTruckSize / 10 + "%");

        }
    }
}

publicstaticvoidmain（字符串[]args）{
扫描仪输入=新扫描仪（System.in）；
System.out.println（“今天有多少辆卡车在运行（卡车数量必须为2辆或更多）？：”；
int totalTrucks=input.nextInt（）；
如果（总卡车数<2）{
System.out.println（“您输入的卡车数量值小于2”）；
System.out.println（“终止程序”）；
系统出口（0）；
}否则{
HashMap smallTrucks=新的HashMap（）；
HashMap largeTrucks=新HashMap（）；
对于（int i=0；ipublic static void main(String[]args){
    Scanner input = new Scanner(System.in);

    System.out.println("How many trucks are operating today (Number of trucks must be 2 or greater)? :");
    int t1 = input.nextInt();

    if(t1 < 2) {
        System.out.println("You entered a value less than 2 for number of trucks.");
        System.out.println("Terminating program. ");
        System.exit(0);
    }
    else {
        double crates = 0;
        double crates1 = 0;

        String truck;
        int i = 0;

        double array[] = new double[t1];
        double array1[] = new double[t1];
        for( i = 0; i < array.length; i++ ) {

            boolean ok = false;

            while(!ok) {
                System.out.println("What is the size of truck " + (i+1) + "(large trucks max crates = 100, small trucks max crates = 10)? ");
                truck = input.next();

                if(truck.equals("large")) {
                    System.out.println("What is the actual number of crates that truck " + (i+1) + " is hauling today (Truck 1 max crates is 100)? ");
                    crates = input.nextDouble();

                    ok = true;
                    array[i] = (crates/100);
                }
                else if(truck.equals("small")){
                    System.out.println("What is the actual number of crates that truck " + (i+1) + " is hauling today (Truck 2 max crates is 10)? ");
                    crates1 = input.nextDouble();

                    ok = true;
                    array1[i] = (crates1/10)*100;
                }
                else {
                    System.out.println("Enter either large or small: ");

                    ok = false;
                }
            }
        }

        System.out.println("**Entry for all trucks completed**");

        System.out.println("Truck " + (i-1) + " max: 100 actual: " + crates + " capacity at: " + (array[i-2]) + "%");
        System.out.println("Truck " + (i) + " max: 10 actual: " + crates1 + " capacity at: " + (array1[i-2]) + "%");


    }
}

            boolean ok = false;

            while (!ok) {
                truck = input.next();

                if (truck.equals("large")) {
                    System.out.println("What is the actual number of crates that truck " + (i + 1) + " is hauling today (Truck 1 max crates is 100)? ");
                    crates = input.nextDouble();

                    ok = true;
                    array[i] = (crates / 100);


                } else if (truck.equals("small")) {
                    System.out.println("What is the actual number of crates that truck " + (i + 1) + " is hauling today (Truck 2 max crates is 10)? ");
                    crates1 = input.nextDouble();

                    ok = true;
                    array1[i] = (crates1 / 10) * 100;
                } else {
                    System.out.println("Enter either large or small: ");
                }
            }