Linked list | Together Java | Page 1

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wind sedge <@&987246399047479336> please have a look, thanks.

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manipulate the linked lists and perform different operations on them. Here's an example implementation in Python:

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class Node:
    def __init__(self, name, x, y):
        self.name = name
        self.x = x
        self.y = y
        self.next = None

class LinkedList:
    def __init__(self):
        self.head = None

    def add_node(self, name, x, y):
        new_node = Node(name, x, y)
        if not self.head:
            self.head = new_node
        else:
            current_node = self.head
            while current_node.next:
                current_node = current_node.next
            current_node.next = new_node

    def calculate_area(self):
        area = 0.0
        current_node = self.head
        while current_node and current_node.next:
            area += (current_node.x * current_node.next.y) - (current_node.y * current_node.next.x)
            current_node = current_node.next
        return abs(area / 2)

    def print_list(self):
        if not self.head:
            print("Linked list is empty")
            return

        current_node = self.head
        while current_node:
            print(f"Name: {current_node.name}, Coordinates: ({current_node.x}, {current_node.y})")
            current_node = current_node.next


# Read data from file and store it in linked list
data_list = LinkedList()
with open("data.txt", "r") as file:
    for line in file.readlines():
        name, x, y = line.strip().split(",")
        data_list.add_node(name, float(x), float(y))

# Calculate area of the linked list coordinates
area = data_list.calculate_area()
print(f"Area: {area}")

# Read commands from file and manipulate the linked list accordingly
with open("commands.txt", "r") as file:
    for line in file.readlines():
        command, *args = line.strip().split(",")
        if command == "ADD":
            name, x, y = args
            data_list.add_node(name, float(x), float(y))
        elif command == "PRINT":
            data_list.print_list()

#Linked list