🎓 Java Console Application

CMPE343 – Course Project #1
A menu-driven console application developed in Java. The program guides the user through different school levels, each containing specific algorithmic and logical operations.

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📌 Table of Contents

• 📖 About the Project
• 🏫 School Levels and Features
• 🛠️ Technologies Used
• 📸 Screenshots
• 👩‍💻 Contributors

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📖 About the Project

This project is a Java console application developed for the CMPE343 – Fundamentals of Java Programming course.

When the application starts, it displays a welcome screen with colorful ASCII Art and team member names. The user is then prompted to select an option from the main menu.

Main Menu Options

• A – Primary School
• B – Secondary School
• C – High School
• D – University
• E – Terminate

The program continues running until the user selects the Terminate option. Invalid inputs are handled without stopping execution, and the screen is cleared after each operation for a clean interface.

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🏫 School Levels and Features

🟢 Primary School

This level focuses on basic string manipulation and date calculations.

1. Age and Zodiac Sign Detection

• The user enters their date of birth (day, month, year).
• The program calculates:
  • Age in years, months, and days
  • Zodiac sign
• Calculations are performed without using built-in date/time libraries.

2. Reverse the Words

• The user provides a text input (Turkish characters supported).
• Every word containing two or more letters is reversed.
• Numbers and punctuation marks remain unchanged.
• The operation is implemented using a recursive method.

3. Return to Main Menu

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🔵 Secondary School

This level includes mathematical algorithms and expression evaluation.

1. Prime Numbers

• The user enters an integer n ≥ 12.
• Prime numbers up to n are generated using:
  • Sieve of Eratosthenes
  • Sieve of Sundaram
  • Sieve of Atkin
• For each algorithm, the program displays:
  • The first 3 and last 2 prime numbers
  • The execution time

2. Step-by-step Evaluation of Expression

• The user enters a mathematical expression.
• Supported operators: + - x : ( )
• Invalid characters or mismatched parentheses trigger a re-entry prompt.
• The expression is evaluated:
  • According to operator precedence
  • Step by step
  • Using recursive evaluation
• Each evaluation step is printed to the console.

3. Return to Main Menu

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🟡 High School

This level focuses on arrays and statistical computations.

1. Statistical Information about an Array

• The user enters the array size and elements (double values).
• The program calculates:
  • Median
  • Arithmetic mean
  • Geometric mean
  • Harmonic mean (calculated recursively)
• Proper median calculation is applied for even-sized arrays.

2. Distance between Two Arrays

• The user enters the dimension and elements of two arrays (values between 0–9).
• The program calculates:
  • Manhattan Distance
  • Euclidean Distance
  • Cosine Similarity
• Invalid inputs trigger warnings and require re-entry.

3. Return to Main Menu

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🔴 University

This level contains the Connect Four game.

• The user selects the board size:
  • 5×4, 6×5, or 7×6
• Game modes:
  • Single Player (against the computer)
  • Two Players
• Game rules and features:
  • Players take turns dropping discs into columns
  • If a column is full, the player must choose another column
  • The screen is refreshed after each move
  • The game ends when:
    • A player connects four discs
    • The board is full (draw)
    • A player quits the game
• In Single Player mode, the computer makes random moves

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🛠️ Technologies Used

• Java
• Java Console (CLI)
• Git & GitHub
• JavaDoc

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📸 Screenshots

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👩‍💻 Contributors

Zeynep Sıla Şimşek

Pelin Cömertler

Simay Mutlu

Nezihat Kılıç