Pseudocode Extractor

def calculate_discount(price, customer_type):
    if customer_type == "premium":
        discount = 0.20
    elif customer_type == "regular":
        discount = 0.10
    else:
        discount = 0.05

    final_price = price * (1 - discount)
    return round(final_price, 2)

FUNCTION calculate_discount(price, customer_type)
    // Calculate final price after applying customer-specific discount

    IF customer_type is "premium" THEN
        discount ← 20%
    ELSE IF customer_type is "regular" THEN
        discount ← 10%
    ELSE
        discount ← 5%
    END IF

    final_price ← price × (1 - discount)

    RETURN final_price rounded to 2 decimals
END FUNCTION

function filterActiveUsers(users) {
    const activeUsers = [];
    for (let i = 0; i < users.length; i++) {
        if (users[i].lastLogin !== null &&
            users[i].status === 'active') {
            activeUsers.push({
                id: users[i].id,
                name: users[i].name
            });
        }
    }
    return activeUsers;
}

FUNCTION filter_active_users(users)
    // Extract active users who have logged in at least once

    active_users ← empty list

    FOR EACH user IN users DO
        IF user has logged in AND user status is "active" THEN
            ADD user.id and user.name to active_users
        END IF
    END FOR

    RETURN active_users
END FUNCTION

public class ShoppingCart {
    private List<Item> items;
    private double totalPrice;

    public ShoppingCart() {
        this.items = new ArrayList<>();
        this.totalPrice = 0.0;
    }

    public void addItem(Item item) {
        items.add(item);
        totalPrice += item.getPrice();
    }

    public void removeItem(String itemId) {
        for (int i = 0; i < items.size(); i++) {
            if (items.get(i).getId().equals(itemId)) {
                totalPrice -= items.get(i).getPrice();
                items.remove(i);
                break;
            }
        }
    }

    public double getTotalPrice() {
        return totalPrice;
    }
}

CLASS ShoppingCart
    ATTRIBUTES:
        items: list of Item objects
        total_price: numeric value

    CONSTRUCTOR
        Initialize empty items list
        Set total_price to 0
    END CONSTRUCTOR

    METHOD add_item(item)
        Add item to items list
        Increase total_price by item price
    END METHOD

    METHOD remove_item(item_id)
        FOR EACH item IN items DO
            IF item.id equals item_id THEN
                Decrease total_price by item price
                Remove item from items list
                EXIT loop
            END IF
        END FOR
    END METHOD

    METHOD get_total_price()
        RETURN total_price
    END METHOD
END CLASS

IF condition THEN
    action
ELSE IF another_condition THEN
    another_action
ELSE
    default_action
END IF

FOR i FROM 1 TO n DO
    action
END FOR

FOR EACH element IN collection DO
    process element
END FOR

WHILE condition DO
    action
END WHILE

REPEAT
    action
UNTIL condition

// Assignment
variable ← value

// Comparison
IF x > y THEN ...
IF x ≠ y THEN ...

// Collections
ADD item TO list
REMOVE item FROM list
FIND item IN list WHERE condition

result ← function_name(arguments)
CALL procedure_name(arguments)