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2025-11-06 10:29:13 +08:00
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29
Exercise/.gitignore vendored Normal file
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### IntelliJ IDEA ###
out/
!**/src/main/**/out/
!**/src/test/**/out/
### Eclipse ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
bin/
!**/src/main/**/bin/
!**/src/test/**/bin/
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
### VS Code ###
.vscode/
### Mac OS ###
.DS_Store

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Exercise/.idea/.gitignore generated vendored Normal file
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# 默认忽略的文件
/shelf/
/workspace.xml
# 基于编辑器的 HTTP 客户端请求
/httpRequests/
# 依赖于环境的 Maven 主目录路径
/mavenHomeManager.xml
# Datasource local storage ignored files
/dataSources/
/dataSources.local.xml

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="21" project-jdk-type="JavaSDK">
<output url="file://$PROJECT_DIR$/out" />
</component>
</project>

8
Exercise/.idea/modules.xml generated Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectModuleManager">
<modules>
<module fileurl="file://$PROJECT_DIR$/Exercise.iml" filepath="$PROJECT_DIR$/Exercise.iml" />
</modules>
</component>
</project>

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Exercise/.idea/uiDesigner.xml generated Normal file
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<project version="4">
<component name="Palette2">
<group name="Swing">
<item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
<default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
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<default-constraints vsize-policy="7" hsize-policy="7" anchor="0" fill="3" />
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<default-constraints vsize-policy="0" hsize-policy="3" anchor="0" fill="1" />
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<property name="text" value="Button" />
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<property name="text" value="RadioButton" />
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<initial-values>
<property name="text" value="CheckBox" />
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<default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" />
<initial-values>
<property name="text" value="Label" />
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<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
<preferred-size width="150" height="-1" />
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<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
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<preferred-size width="150" height="50" />
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<item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.svg" removable="false" auto-create-binding="true" can-attach-label="true">
<default-constraints vsize-policy="0" hsize-policy="2" anchor="8" fill="1" />
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<item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.svg" removable="false" auto-create-binding="true" can-attach-label="false">
<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
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<item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.svg" removable="false" auto-create-binding="true" can-attach-label="false">
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<preferred-size width="150" height="50" />
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<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
<preferred-size width="150" height="50" />
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<item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.svg" removable="false" auto-create-binding="true" can-attach-label="false">
<default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
<preferred-size width="200" height="200" />
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<item class="javax.swing.JSplitPane" icon="/com/intellij/uiDesigner/icons/splitPane.svg" removable="false" auto-create-binding="false" can-attach-label="false">
<default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
<preferred-size width="200" height="200" />
</default-constraints>
</item>
<item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.svg" removable="false" auto-create-binding="true" can-attach-label="true">
<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
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<item class="javax.swing.JSlider" icon="/com/intellij/uiDesigner/icons/slider.svg" removable="false" auto-create-binding="true" can-attach-label="false">
<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
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<item class="javax.swing.JSeparator" icon="/com/intellij/uiDesigner/icons/separator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3" />
</item>
<item class="javax.swing.JProgressBar" icon="/com/intellij/uiDesigner/icons/progressbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
<default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
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<item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.svg" removable="false" auto-create-binding="false" can-attach-label="false">
<default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1">
<preferred-size width="-1" height="20" />
</default-constraints>
</item>
<item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
<default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" />
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<item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
<default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
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</group>
</component>
</project>

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings" defaultProject="true" />
</project>

11
Exercise/Exercise.iml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>

19
Exercise/src/Chapter3/AverageScore.java Normal file
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package Chapter3;
import java.util.Scanner;
public class AverageScore {
public static void main(String[] args) {
final int NUMBER_OF_MEMBERS = 5;
double totalScore = 0;
Scanner scanner = new Scanner(System.in);
System.out.println("请输入 " + NUMBER_OF_MEMBERS + " 位小组成员的分数:");
for (int i = 1; i <= NUMBER_OF_MEMBERS; i++) {
System.out.print("请输入第 " + i + " 位成员的分数: ");
totalScore += scanner.nextDouble();
}
double averageScore = totalScore / NUMBER_OF_MEMBERS;
System.out.println("小组的平均分数为: " + averageScore);
scanner.close();
}
}

17
Exercise/src/Chapter3/BmiCalc.java Normal file
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package Chapter3;
import java.util.Scanner;
public class BmiCalc {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("输入身高单位为m:");
double heightM = scanner.nextDouble();
System.out.println("输入体重单位为kg:");
double weightKg = scanner.nextDouble();
double bmiValue = weightKg / (heightM * heightM);
int bmiInteger = (int) bmiValue;
System.out.println("得出的BMI的值为: " + bmiInteger);
scanner.close();
}
}

16
Exercise/src/Chapter3/KfcSales.java Normal file
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package Chapter3;
import java.util.Scanner;
public class KfcSales {
public static void main(String[] args) {
final double PRICE_PER_HAMBURGER = 15.5;
Scanner scanner = new Scanner(System.in);
System.out.println("请输入售出汉堡的数量:");
int numberOfHamburgers = scanner.nextInt();
double totalSales = numberOfHamburgers * PRICE_PER_HAMBURGER;
System.out.println("一天总出售的汉堡数量为: " + numberOfHamburgers + "个");
System.out.printf("全天售出的总金额为: %.1f元\n", totalSales);
scanner.close();
}
}

21
Exercise/src/Chapter3/PaymentResult.java Normal file
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package Chapter3;
import java.util.Scanner;
public class PaymentResult {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入支付金额:");
double paymentAmount = scanner.nextDouble();
System.out.println("\n支付成功");
System.out.println("京东商城");
System.out.printf("%.1f元\n", paymentAmount);
System.out.println("优惠金额\t\t10.00元");
System.out.println("支付方式\t\t工商银行储蓄卡(5009)");
System.out.println("交易时间\t\t2018-11-27 00:34:02");
System.out.println("订单编号\t\t893412929");
scanner.close();
}
}

15
Exercise/src/Chapter3/ProteinInMilk.java Normal file
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package Chapter3;
import java.util.Scanner;
public class ProteinInMilk {
public static void main(String[] args) {
final double PROTEIN_PER_CARTON = 6.4;
Scanner scanner = new Scanner(System.in);
System.out.println("请输入购买牛奶的盒数:");
int numberOfCartons = scanner.nextInt();
double totalProtein = numberOfCartons * PROTEIN_PER_CARTON;
System.out.println(numberOfCartons + "袋牛奶含有的蛋白质: " + totalProtein + "g");
scanner.close();
}
}

15
Exercise/src/Chapter3/SpeedConvert.java Normal file
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package Chapter3;
import java.util.Scanner;
public class SpeedConvert {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入速度:");
double speedKmh = scanner.nextDouble();
double speedMsRaw = speedKmh / 3.6;
double speedMsFormatted = Math.floor(speedMsRaw);
System.out.printf("%.0fkm/h = %.1fm/s\n", speedKmh, speedMsFormatted);
scanner.close();
}
}

24
Exercise/src/Chapter3/SubwayTicket.java Normal file
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package Chapter3;
import java.util.Scanner;
public class SubwayTicket {
public static void main(String[] args) {
final String DESTINATION = "人民广场";
final double TICKET_PRICE = 2.00;
Scanner scanner = new Scanner(System.in);
System.out.println("购票信息");
System.out.println("--------------------");
System.out.println("目的车站: " + DESTINATION);
System.out.printf("票价: %.2f\n", TICKET_PRICE);
System.out.print("购票数量: ");
int numberOfTickets = scanner.nextInt();
double amountDue = numberOfTickets * TICKET_PRICE;
System.out.printf("应付金额: %.0f\n", amountDue);
System.out.print("已付金额: ");
int amountPaid = scanner.nextInt();
double change = amountPaid - amountDue;
System.out.printf("找零: %.0f\n", change);
scanner.close();
}
}

17
Exercise/src/Chapter3/TruckCapacity.java Normal file
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package Chapter3;
public class TruckCapacity {
public static void main(String[] args) {
double truckLength = 4.2;
double truckWidth = 1.9;
double truckHeight = 1.9;
double boxLength = 0.5;
double boxWidth = 0.5;
double boxHeight = 0.3;
int boxesAlongLength = (int) (truckLength / boxLength);
int boxesAlongWidth = (int) (truckWidth / boxWidth);
int boxesAlongHeight = (int) (truckHeight / boxHeight);
int totalBoxes = boxesAlongLength * boxesAlongWidth * boxesAlongHeight;
System.out.println("德邦物流车可以装载 " + totalBoxes + " 个这样规格的箱子。");
}
}

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Exercise/src/Chapter4/FilterApartment.java Normal file
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package Chapter4;
public class FilterApartment {
public static void main(String[] args) {
int area, level, price;
java.util.Scanner scanner = new java.util.Scanner(System.in);
System.out.println("请输入您要购买的楼房的面积：");
area = scanner.nextInt();
System.out.println("以上购房面积符合您的要求");
System.out.println("请输入您的楼层数：");
level = scanner.nextInt();
System.out.println("以上的楼层数符合您的要求");
System.out.println("请输入您能承担总价格：");
price = scanner.nextInt();
System.out.println("以上楼房总价格在您的承受范围内");
}
}

24
Exercise/src/Chapter4/PayElectricityBill.java Normal file
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package Chapter4;
public class PayElectricityBill {
public static void main (String[] args) {
final int ARREARS_AMOUNT = 574;
System.out.println("欠费金额: " + ARREARS_AMOUNT + "元");
System.out.println("户名：长春惠鹏石油化工科技有限公司");
System.out.println("户号：0140117369");
System.out.println("地址：吉林省长春市二道区中意之尊小区4#楼商铺101");
System.out.println("截止时间：19日4时");
java.util.Scanner scanner = new java.util.Scanner(System.in);
while (true) {
System.out.println("请输入缴费金额（大于574）：");
int pay_amount = scanner.nextInt();
if (pay_amount < ARREARS_AMOUNT) {
System.out.println("缴费金额不足，请重新输入！");
} else {
int balance = pay_amount - ARREARS_AMOUNT;
System.out.println("账户电费余额为：" + balance);
break;
}
}
}
}