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Discrete-Structures-2-Activities

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# Discrete Structures 2 — Activities

Java console exercises for **Discrete Structures 2**. Each activity is a small,
menu-driven program that applies logic and validation rules from class.

---

## Repository Layout

| Folder                              | Topic                                         | Entry file                  |
| ----------------------------------- | --------------------------------------------- | --------------------------- |
| `Activity1_PasswordAndTriangle/`    | Password strength + triangle classification   | `TampugaoActivity1.java`    |
| `Activity2_PinAndLeapYear/`         | ATM PIN validation + leap-year check          | `TampugaoActivity2.java`    |

Every activity folder ships with its own `README.md` covering the problem,
rules used, and a sample run. Higher-level design notes live under `docs/`.

---

## Prerequisites

- **JDK 8 or newer** (JDK 17+ recommended)
  - Check with: `java -version` and `javac -version`

No external libraries, no Maven, no Gradle — pure JDK.

---

## How to Run

Pick an activity, compile, and run:

```bash
# Activity 1
cd Activity1_PasswordAndTriangle
javac TampugaoActivity1.java
java TampugaoActivity1
```

```bash
# Activity 2
cd Activity2_PinAndLeapYear
javac TampugaoActivity2.java
java TampugaoActivity2
```

---

## Documentation

- [Activity 1 — Password Strength & Triangle Type Checker](docs/activity-1.md)
- [Activity 2 — ATM PIN Validator & Leap Year Checker](docs/activity-2.md)

---

## Concepts Covered

- Conditional logic and branching (`if` / `else`, `switch` expressions)
- Character classification (`Character.isLetter`, `Character.isDigit`)
- Numeric parsing with input validation
- Boolean rule composition (PIN validity, leap-year rule)
- Triangle inequality theorem (geometric validity)
- Menu-driven console programs with `Scanner`
- `enum` types for self-documenting return values

---

## License

Released under the [MIT License](LICENSE).

---

## Author

**zhameersheraz** — Discrete Structures 2 coursework

Discrete-Structures-2-Activities

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