# Second Assignment - Git and Java Basics

Let's kick things off by solving three basic problems to refresh your knowledge of *Java* and *Git*.

## Getting Started

Follow these steps to set up your project:

### 0. Watch the introductory video
We have recorded a special video, explaining the exact steps that needs to be taken to complete this assignment. 
Here is the [link](https://drive.meshcomp.ir/d/c9138977a329485585ae/) 

**Make sure to watch the video before starting the assignment.**

### 1. Fork and Clone the Repository

First, fork the repository on GitHub or Gitea (click the Fork button on the top-right).

Then clone your forked repository:


```
git clone https://git.meshcomp.ir/YOUR_USERNAME/repository-name.git
```
or
```
git clone https://github.com/YOUR_USERNAME/repository-name.git
```

<br/>

then
```
cd repository-name
```


### 2. Share with Your Mentor

**Add mentor as collaborator:**
1. Go to your forked repository on GitHub or Gitea
2. Click Settings → Collaborators → Add people
3. Enter your mentor's GitHub or Gitea username or email


### 3. Set up Mirrors if You Have Restricted Internet Connection

If you're behind a firewall or have restricted internet access, configure Maven to use mirror repositories.

**For Windows:**
- Location: `C:\Users\YourUsername\.m2\settings.xml`

**For macOS/Linux:**
- Location: `~/.m2/settings.xml` (the `.m2` folder is in your home directory)


**Place this configuration in `settings.xml`:**

```xml
<settings>
  <mirrors>
    <mirror>
      <id>devneeds-maven</id>
      <name>DevNeeds Maven Mirror</name>
      <url>https://maven.devneeds.ir/</url>
      <mirrorOf>central</mirrorOf>
    </mirror>
  </mirrors>
</settings>
```

**Reload Maven configuration:**

Click on the Maven tool window → Click "Reload All Maven Projects" button (circular arrows)

**If mirrors still don't work:** Contact your mentor with details about your network setup (proxy, firewall, region). They may provide institution-specific mirrors.

### 4. Unit Tests
- In the test folders there are some unit tests using junit library that you and your mentors will use in order to test the correctness of your program.
- You can run the file or individual functions to see the results of the test in IntelliJ IDEA.


### 5. Create a `develop` branch

```bash
# Create and switch to the develop branch:
git checkout -b develop

# Verify you're on the develop branch:
git branch
# You should see "* develop" in the output
```

### 6. Complete the Tasks

**Task 1: Implement MainExercises.java**
- Open `src/main/java/MainExercises.java`
- Implement the following methods based on the comments:

```java
// Method signature you'll find:
public char[][] generateTriangle(int n);
public int[] spiralTraversal(int[][] values, int rows, int cols);  
public int[][] intPartitions(int n);
```

**Task 2: Implement BonusExercises.java (Optional)**
- Open `src/main/java/BonusExercises.java`
- Implement bonus methods for extra credit

**Task 3: Make all tests pass**
- Run the tests frequently as you implement each method
- Each test file under `test/java` should execute without failures

**Project structure reference:**
```
src
├── main
│   ├── java
│   │   ├── MainExercises.java      # REQUIRED: Implement all methods
│   │   ├── BonusExercises.java     # OPTIONAL: Extra credit
│   └── resources                     
└── test
    └── java
        ├── MainTestPartitions.java   # MUST PASS
        ├── MainTestTriangle.java     # MUST PASS
        ├── MainTestTraversal.java    # MUST PASS
        ├── BonusTestDates.java        # OPTIONAL
        ├── BonusTestEmail.java        # OPTIONAL
        ├── BonusTestPalindromes.java  # OPTIONAL
        └── BonusTestPasswords.java    # OPTIONAL
```

### 7. Commit Your Work Locally

**Stage and commit files:**

```bash
git status

git add src/main/java/MainExercises.java

git add .

git commit -m "Implement intPartitions method"
```

## 8. Push to Remote Repository

```bash
# First, ensure you're on the develop branch:
git branch  # Should show "* develop"

# Push to remote 
git push origin develop
```

## 9. Create a Pull Request to YOUR Own Repository

**Important:** Create the pull request in your OWN forked repository (not the original/main classroom repository).

### Step-by-Step Pull Request Process:

**Step 1: Navigate to your forked repository on GitHub or Gitea**
```
https://git.meshcomp.ir/YOUR_USERNAME/repository-name
```
or
```
https://github.com/YOUR_USERNAME/repository-name
```

**Step 2: Create a new pull request**
- Click on **"Pull requests"** tab (top navigation)
- Click the **"New pull request"** button

**Step 3: Configure the pull request branches**
```
base: main     ←── compare: develop
(your main branch)    (your develop branch)
```

**Important settings:**
- **base repository:** `YOUR_USERNAME/repository-name` (your fork)
- **base branch:** `main` 
- **head repository:** `YOUR_USERNAME/repository-name` (same fork)
- **compare branch:** `develop`

**Step 4: Create the pull request**
- Click **"Create pull request"** button
- Add a title: `"Complete assignment - ready for grading"`
- Add a description:
```markdown
## Assignment Submission

### Completed Tasks:
- [x] All MainExercises implemented
- [x] All unit tests passing
- [x] Code follows Java conventions

Ready for review and grading!
```

**Step 5: Final submission**
- Click **"Create pull request"**
- Share the pull request link with your mentor

## 10. Mentor Reviews and Grades Your Project

### What your mentor will do:

1. **Review the pull request** in your repository
2. **Run the unit tests** to verify your solutions
3. **Check code quality** (naming conventions, comments, efficiency)
4. **Merge the pull request** if everything is correct:
- Click **"Merge pull request"** button
- Confirm with **"Confirm merge"**


## Prerequisites

Before starting, ensure you have:

- **Basic knowledge of Java** (variables, loops, conditionals, arrays, methods)
- **A good grasp of Git commands** (clone, add, commit, push, branch)

## Getting Help

- **Mentor contact**
- **Git documentation:** https://docs.meshcomp.ir/git

---

Good luck, and happy coding!