Consolidate Algorithm Solutions in Maven

Consolidate Algorithm Solutions in Maven | Generated by AI

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To consolidate all your algorithm solutions (nowcoder, uva, etc.) into a single Maven module managed by one pom.xml file in the algorithm-solutions root directory, we’ll treat the entire project as one module. The Java files from nowcoder and uva (and other directories like codeforces, hacker_rank, etc.) will be organized under src/main/java with appropriate package structures (e.g., com.algorithm.solutions.nowcoder, com.algorithm.solutions.uva). Input files (e.g., 1.in) will go into src/main/resources.

Assumptions

All Java files (e.g., nowcoder/Main.java, uva/106/src/Main.java) will be moved to src/main/java/com/algorithm/solutions/<platform> (e.g., nowcoder, uva/p106).
Input files (e.g., uva/106/1.in) will be moved to src/main/resources/<platform> (e.g., uva/p106).
The project uses Java 17 (adjustable in the pom.xml).
The pom.xml will be in the algorithm-solutions root directory, and no submodules will be used.

Directory Structure

After reorganization (assuming you run the Python script from the previous response for uva and a similar one for nowcoder), the structure will be:

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

Parent `pom.xml`

This pom.xml goes in the algorithm-solutions root directory. It configures the project as a single module, includes resources for input files, and sets up the Maven compiler for Java 17.

<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>jar</packaging>

    <name>Algorithm Solutions</name>
    <description>Consolidated project for algorithm solutions from multiple platforms</description>

    <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>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.in</include>
                </includes>
            </resource>
        </resources>
        <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>
            <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>

Notes on the `pom.xml`

Packaging: Set to jar since this is a single executable module.
Resources: Includes *.in files from src/main/resources for input files.
Main Class: Set to com.algorithm.solutions.nowcoder.Main as a default. Since each problem may have its own Main class, you’ll typically run specific classes using mvn exec:java.
Java Version: Uses Java 17; adjust <maven.compiler.source> and <maven.compiler.target> if needed.

Steps to Set Up

Create Directory Structure:

mkdir -p src/main/java/com/algorithm/solutions/{nowcoder,uva,codeforces,hacker_rank}
mkdir -p src/main/resources/{nowcoder,uva,codeforces,hacker_rank}

Move Files:

For nowcoder:

mkdir -p src/main/java/com/algorithm/solutions/nowcoder
mv nowcoder/*.java src/main/java/com/algorithm/solutions/nowcoder/

Add package declaration to each Java file (e.g., Main.java):

package com.algorithm.solutions.nowcoder;
// ... rest of the code ...

For uva, use the Python script from the previous response, or manually:

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

Add package declaration to Main.java:

package com.algorithm.solutions.uva.p106;
// ... rest of the code ...

Repeat for other UVA problems (100, 10000, etc.).

Place the pom.xml:
- Save the above pom.xml in the algorithm-solutions root directory.
Build the Project:
```
mvn clean install
```

Run a Specific Program:

For a nowcoder problem:

mvn exec:java -Dexec.mainClass="com.algorithm.solutions.nowcoder.Main"

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

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

Python Script for `nowcoder`

To complement the previous uva script, here’s a Python script to move nowcoder files to src/main/java/com/algorithm/solutions/nowcoder/ and add package declarations. Run this from the algorithm-solutions root directory.

import os
from pathlib import Path

def add_package_declaration(java_file, package):
    """Add package declaration to the top of a Java file if not already present."""
    with open(java_file, 'r', encoding='utf-8') as f:
        content = f.read()
    
    if not content.strip().startswith('package '):
        new_content = f'package {package};\n\n{content}'
        with open(java_file, 'w', encoding='utf-8') as f:
            f.write(new_content)
        print(f'Added package declaration to {java_file}')

def reorganize_nowcoder():
    # Define paths
    nowcoder_root = Path('nowcoder')
    target_dir = Path('src/main/java/com/algorithm/solutions/nowcoder')

    # Create target directory
    target_dir.mkdir(parents=True, exist_ok=True)

    if not nowcoder_root.exists():
        print('Error: nowcoder directory not found.')
        return

    # Move Java files
    for java_file in nowcoder_root.glob('*.java'):
        target_file = target_dir / java_file.name
        shutil.move(str(java_file), str(target_file))
        print(f'Moved {java_file} to {target_file}')
        
        # Add package declaration
        add_package_declaration(target_file, 'com.algorithm.solutions.nowcoder')

    # Remove empty nowcoder directory
    if not any(nowcoder_root.iterdir()):
        nowcoder_root.rmdir()
        print(f'Removed empty directory {nowcoder_root}')

if __name__ == '__main__':
    reorganize_nowcoder()
    print('Nowcoder reorganization complete.')

Notes

Running Scripts: Run the reorganize_uva.py (from the previous response) and reorganize_nowcoder.py scripts to move files:
```
python reorganize_uva.py
python reorganize_nowcoder.py
```
Input Files: If nowcoder has input files, modify the script to move *.in files to src/main/resources/nowcoder/.
Other Directories: For codeforces, hacker_rank, etc., you can adapt the nowcoder script by changing the source directory and package name.
Resource Access: Update your Java code to read input files from src/main/resources (e.g., getClass().getResource("/uva/p106/1.in")).
Ignoring Files: Add *.iml to a .gitignore file to exclude IntelliJ project files.

Let me know if you need scripts for other directories or further tweaks to the pom.xml!

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