Maven Structure for UVA Problems

Maven Structure for UVA Problems | Generated by AI

Home 2025.07

Thanks for sharing the specific directory structure for your uva/106 subdirectory. It seems your project has a more granular structure where each UVA problem (e.g., 106) is a separate directory with its own src folder containing a Main.java file and possibly input files like 1.in. This suggests that each problem might be treated as a separate subproject or module. To accommodate this in a Maven multi-module setup, we can either:

Treat each problem directory (e.g., uva/106) as its own Maven submodule.
Keep uva as a single module and organize problem files within its src/main/java directory.

Given the number of UVA problems (as seen in your earlier list: 100, 10000, etc.), creating a separate Maven module for each problem could lead to a large number of modules, which might be cumbersome. Instead, I’ll propose a structure where uva is a single module, and each problem’s Main.java is organized within uva/src/main/java under a package structure (e.g., com.algorithm.solutions.uva.p106 for problem 106). This keeps the project manageable while maintaining Maven’s benefits.

However, I’ll also provide an alternative approach where each problem is a separate submodule if you prefer that granularity. Below, I’ll update the pom.xml files based on your structure and provide steps to reorganize your files.

Option 1: Single `uva` Module with Problem Packages

Updated Directory Structure

algorithm-solutions/
├── pom.xml
├── nowcoder/
│   ├── pom.xml
│   └── src/
│       └── main/
│           └── java/
│               └── com/algorithm/solutions/nowcoder/
│                   ├── Main.java
│                   ├── nc140.java
│                   ├── nc45.java
│                   ├── nc78.java
│                   └── nc93.java
├── uva/
│   ├── pom.xml
│   ├── src/
│   │   └── main/
│   │       └── java/
│   │           └── com/algorithm/solutions/uva/
│   │               ├── p100/
│   │               │   └── Main.java
│   │               ├── p106/
│   │               │   └── Main.java
│   │               ├── p10000/
│   │               │   └── Main.java
│   │               └── (etc.)
│   └── resources/
│       └── uva/
│           ├── p100/
│           │   └── 1.in
│           ├── p106/
│           │   └── 1.in
│           └── (etc.)
└── README.md

Parent `pom.xml` (Root: `algorithm-solutions/pom.xml`)

This remains largely the same as before, defining nowcoder and uva as modules.

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.algorithm.solutions</groupId>
    <artifactId>algorithm-solutions</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>pom</packaging>

    <name>Algorithm Solutions Parent</name>
    <description>Parent project for algorithm solutions</description>

    <modules>
        <module>nowcoder</module>
        <module>uva</module>
    </modules>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.13.0</version>
                <configuration>
                    <source>${maven.compiler.source}</source>
                    <target>${maven.compiler.target}</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

Nowcoder Submodule `pom.xml` (`nowcoder/pom.xml`)

This is unchanged from the previous response, assuming nowcoder files are moved to src/main/java/com/algorithm/solutions/nowcoder/.

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>com.algorithm.solutions</groupId>
        <artifactId>algorithm-solutions</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <artifactId>nowcoder</artifactId>
    <name>Nowcoder Solutions</name>
    <description>Solutions for Nowcoder algorithm problems</description>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.4.2</version>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>com.algorithm.solutions.nowcoder.Main</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

UVA Submodule `pom.xml` (`uva/pom.xml`)

This module includes a resources directory for input files like 1.in. The Main.java files for each problem are organized in packages.

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>com.algorithm.solutions</groupId>
        <artifactId>algorithm-solutions</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <artifactId>uva</artifactId>
    <name>UVA Solutions</name>
    <description>Solutions for UVA algorithm problems</description>

    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.in</include>
                </includes>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.4.2</version>
            </plugin>
        </plugins>
    </build>
</project>

File Organization

Move Java Files:
- For each problem (e.g., uva/106/src/Main.java), move Main.java to uva/src/main/java/com/algorithm/solutions/uva/p106/Main.java.
- Update the Main.java file to include the package declaration:
```
package com.algorithm.solutions.uva.p106;
public class Main {
    // ... existing code ...
}
```
- Do this for all problems (e.g., p100, p10000, etc.).
Move Input Files:
- Move input files like uva/106/1.in to uva/src/main/resources/uva/p106/1.in.
- This allows Maven to include these files in the JAR, accessible via ClassLoader.getResource() or similar in your Java code.

Running a Program

To run a specific UVA problem (e.g., problem 106):

mvn -pl uva exec:java -Dexec.mainClass="com.algorithm.solutions.uva.p106.Main"

Option 2: Each UVA Problem as a Submodule

If you prefer each UVA problem (e.g., 106, 100) to be its own Maven module, here’s how to set it up. This is more granular but increases the number of pom.xml files.

Updated Directory Structure

algorithm-solutions/
├── pom.xml
├── nowcoder/
│   ├── pom.xml
│   └── src/
│       └── main/
│           └── java/
│               └── com/algorithm/solutions/nowcoder/
│                   ├── Main.java
│                   ├── nc140.java
│                   ├── nc45.java
│                   ├── nc78.java
│                   └── nc93.java
├── uva/
│   ├── 106/
│   │   ├── pom.xml
│   │   ├── src/
│   │   │   └── main/
│   │   │       └── java/
│   │   │           └── com/algorithm/solutions/uva/p106/
│   │   │               └── Main.java
│   │   └── resources/
│   │       └── 1.in
│   ├── 100/
│   │   ├── pom.xml
│   │   ├── src/
│   │   │   └── main/
│   │   │       └── java/
│   │   │           └── com/algorithm/solutions/uva/p100/
│   │   │               └── Main.java
│   │   └── resources/
│   │       └── (input files, if any)
│   └── (other problem directories)
└── README.md

Parent `pom.xml` (Root: `algorithm-solutions/pom.xml`)

Add each problem as a module.

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instanceHe
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.algorithm.solutions</groupId>
    <artifactId>algorithm-solutions</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>pom</packaging>

    <name>Algorithm Solutions Parent</name>
    <description>Parent project for algorithm solutions</description>

    <modules>
        <module>nowcoder</module>
        <module>uva/106</module>
        <module>uva/100</module>
        <module>uva/10000</module>
        <module>uva/10006</module>
        <module>uva/10008</module>
        <module>uva/10009</module>
        <module>uva/10012</module>
        <module>uva/10013</module>
        <module>uva/10018</module>
        <module>uva/10019</module>
        <module>uva/10026</module>
        <module>uva/10033</module>
        <module>uva/10034</module>
    </modules>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.13.0</version>
                <configuration>
                    <source>${maven.compiler.source}</source>
                    <target>${maven.compiler.target}</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

Nowcoder Submodule `pom.xml` (`nowcoder/pom.xml`)

Same as above (unchanged).

UVA Problem 106 Submodule `pom.xml` (`uva/106/pom.xml`)

Each problem has its own pom.xml. Here’s an example for uva/106:

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>com.algorithm.solutions</groupId>
        <artifactId>algorithm-solutions</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <artifactId>uva-106</artifactId>
    <name>UVA Problem 106</name>
    <description>Solution for UVA problem 106</description>

    <build>
        <resources>
            <resource>
                <directory>resources</directory>
                <includes>
                    <include>**/*.in</include>
                </includes>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.4.2</version>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>com.algorithm.solutions.uva.p106.Main</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

Repeat for Other Problems: Create similar pom.xml files for uva/100, uva/10000, etc., adjusting the artifactId (e.g., uva-100), name, and mainClass (e.g., com.algorithm.solutions.uva.p100.Main).

File Organization

Move Java Files:
- For uva/106/src/Main.java, move to uva/106/src/main/java/com/algorithm/solutions/uva/p106/Main.java.
- Add package declaration:
```
package com.algorithm.solutions.uva.p106;
public class Main {
    // ... existing code ...
}
```
Move Input Files:
- Move uva/106/1.in to uva/106/resources/1.in.

Running a Program

To run problem 106:

mvn -pl uva/106 exec:java -Dexec.mainClass="com.algorithm.solutions.uva.p106.Main"

Recommendation

Option 1 (Single uva Module) is simpler and more scalable, especially if you have many UVA problems. It avoids creating numerous pom.xml files and keeps the project structure clean. Use packages to organize problems logically.
Option 2 (Per-Problem Modules) is better if you want each problem to be completely independent (e.g., for separate deployment or testing). However, it requires more maintenance due to the number of modules.

Steps to Implement Option 1

Create Directory Structure:

Run these commands in the algorithm-solutions root:

mkdir -p uva/src/main/java/com/algorithm/solutions/uva
mkdir -p uva/src/main/resources/uva
mkdir -p nowcoder/src/main/java/com/algorithm/solutions/nowcoder

Move Files:

For each UVA problem (e.g., 106):

mkdir -p uva/src/main/java/com/algorithm/solutions/uva/p106
mv uva/106/src/Main.java uva/src/main/java/com/algorithm/solutions/uva/p106/Main.java
mkdir -p uva/src/main/resources/uva/p106
mv uva/106/1.in uva/src/main/resources/uva/p106/1.in

For nowcoder:

mv nowcoder/*.java nowcoder/src/main/java/com/algorithm/solutions/nowcoder/

Update Java Files:
- Add appropriate package declarations (e.g., package com.algorithm.solutions.uva.p106; for uva/106/Main.java).
Add pom.xml Files:
- Place the parent pom.xml in algorithm-solutions/.
- Place the nowcoder/pom.xml and uva/pom.xml as shown.
Build:
```
mvn clean install
```

Notes

Input Files: If your Main.java reads input files like 1.in, update the code to access them via getClass().getResource("/uva/p106/1.in") or similar, since they’re now in src/main/resources.
Ignoring .iml Files: Add a .gitignore file with *.iml to exclude IntelliJ project files from version control.
Other Directories: For codeforces, hacker_rank, etc., you can create similar modules when ready. Let me know if you need pom.xml files for those.
Java Version: Adjust <maven.compiler.source> and <maven.compiler.target> if you use a different Java version.

If you prefer Option 2 or need help with specific problems (e.g., adjusting Main.java for resource loading), let me know!

Back Donate