https://github.com/furk4nbulut/account-number-controller-algorithm

This project involves a Java program designed to validate account numbers based on specific criteria. The program follows a set of rules to determine if an account number is valid or invalid, making use of string manipulation and basic arithmetic operations.
https://github.com/furk4nbulut/account-number-controller-algorithm

algorithm java

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This project involves a Java program designed to validate account numbers based on specific criteria. The program follows a set of rules to determine if an account number is valid or invalid, making use of string manipulation and basic arithmetic operations.

• Host: GitHub
• URL: https://github.com/furk4nbulut/account-number-controller-algorithm
• Owner: Furk4nBulut
• Created: 2022-12-28T22:53:13.000Z (almost 2 years ago)
• Default Branch: master
• Last Pushed: 2024-08-10T08:03:37.000Z (3 months ago)
• Last Synced: 2024-08-10T09:22:21.860Z (3 months ago)
• Topics: algorithm, java
• Language: Java
• Homepage:
• Size: 4.88 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Account Number Validation Program

## Overview

This project involves a Java program designed to validate account numbers based on specific criteria. The program follows a set of rules to determine if an account number is valid or invalid, making use of string manipulation and basic arithmetic operations.

## Assignment Details

### Objective

Create a Java program that validates account numbers based on the following criteria:

1. **Format**:

   - The account number must be exactly 16 characters long.

   - It must start with two capital letters where the first letter must be less than the second one (e.g., AB, CH, AZ).

2. **Prime Number Check**:

   - The two digits following the letters must represent a prime number.

3. **Validation Algorithm**:

   - **Step 1**: Double every second digit from right to left in the remaining 12 digits of the account number.

     - If doubling results in a two-digit number, sum the digits of the result.

   - **Step 2**: Sum all the single-digit numbers obtained from Step 1.

   - **Step 3**: Add all the digits in the odd positions from right to left.

   - **Step 4**: Sum the results from Step 2 and Step 3.

   - **Step 5**: If the final sum is divisible by 10, the account number is valid; otherwise, it is invalid.

### Code Explanation

- **`accountNumberControl` Class**:

  - Contains a static method `control` that performs the validation.

  - Checks the format of the account number, performs prime number validation, and applies the Luhn algorithm to determine the validity.

- **`Main` Class**:

  - Prompts the user to input an account number.

  - Calls the `control` method to validate the provided account number and prints the result.

### Example

**Input**:

```

AC11576018412626

```

**Output**:

```

Account number is valid!

```

## Usage

1. Compile the Java files using:

   ```

   javac Main.java accountNumberControl.java

   ```

2. Run the program using:

   ```

   java Main

   ```

3. Enter a 16-character account number when prompted.

## Requirements

- Java 8 or later

## Notes

- Ensure that the account number entered meets the length and format criteria before validation.

- The program uses the Luhn algorithm for validating the account number's numerical section.