#array to linked list without using java.util.

1 messages · Page 1 of 1 (latest)

teal portal
#

need to create linked list from array without using java.util.

tall kayakBOT
#

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

tall kayakBOT
#

While you are waiting for getting help, here are some tips to improve your experience:

Code is much easier to read if posted with syntax highlighting and proper formatting.

If nobody is calling back, that usually means that your question was not well asked and hence nobody feels confident enough answering. Try to use your time to elaborate, provide details, context, more code, examples and maybe some screenshots. With enough info, someone knows the answer for sure.

Don't forget to close your thread using the command </help-thread close:1027500463647621170> when your question has been answered, thanks.

#

Here is an AI assisted attempt to answer your question 🤖. Maybe it helps! In any case, a human is on the way 👍. To continue talking to the AI, you can use </chatgpt:1108714622413963314>.

#

To create a linked list from an array without using java.util, you can define a custom Node class and iterate through the array to create the linked list. Here's an example implementation:

public class LinkedListFromArray {
    static class Node {
        int data;
        Node next;

        Node(int data) {
            this.data = data;
            this.next = null;
        }
    }

    public static void main(String[] args) {
        int[] arr = {1, 2, 3, 4, 5};
        
        Node head = createLinkedList(arr);
        
        // Print the linked list
        printLinkedList(head);
    }

    public static Node createLinkedList(int[] arr) {
        if (arr.length == 0) {
            return null;
        }

        Node head = new Node(arr[0]);
        Node current = head;

        for (int i = 1; i < arr.length; i++) {
            current.next = new Node(arr[i]);
            current = current.next;
        }

        return head;
    }

    public static void printLinkedList(Node head) {
        if (head == null) {
            System.out.println("Linked list is empty.");
            return;
        }

        Node current = head;

        while (current != null) {
            System.out.print(current.data + " ");
            current = current.next;
        }
    }
}

This code creates a custom Node class with two fields: data to store the value of each node and next to store the reference to the next node. The createLinkedList method iterates through the array and creates nodes with corresponding values. The printLinkedList method traverses the linked list and prints its elements.

When you run this code, it will output: 1 2 3 4 5, which represents the elements of the linked list created from the array [1, 2, 3, 4, 5].

teal portal
# 
        for (int k = 0; k < myElements.length; k++) {

            Node newNode = new Node(myElements[k]);
            newNode.val = myElements[k];

            while (temp.next != null) {
                temp = temp.next;
            }

            System.out.println(newNode.val);
        }```
tall kayakBOT
tall kayakBOT
#

To create a linked list from an array without using java.util, you can define your own LinkedList class and implement the necessary methods. Here's an example implementation:

class Node {
    int data;
    Node next;

    public Node(int data) {
        this.data = data;
        this.next = null;
    }
}

class LinkedList {
    Node head;

    public LinkedList() {
        this.head = null;
    }

    public void add(int data) {
        Node newNode = new Node(data);

        if (head == null) {
            head = newNode;
        } else {
            Node current = head;
            while (current.next != null) {
                current = current.next;
            }
            current.next = newNode;
        }
    }

    public void display() {
        Node current = head;

        while (current != null) {
            System.out.print(current.data + " ");
            current = current.next;
        }
        System.out.println();
    }
}

public class Main {
    public static void main(String[] args) {
        int[] array = {1, 2, 3, 4, 5};

        LinkedList linkedList = new LinkedList();
        
        for (int i : array) {
            linkedList.add(i);
        }

        linkedList.display();
    }
}

In the above code, we define a Node class to represent each element in the linked list. The LinkedList class has a head variable that points to the first node in the list. The add method adds elements to the end of the list by traversing through the existing nodes until it reaches the last node and then appending the new node. The display method prints out all elements in the linked list.

In the main method, we create an instance of LinkedList, iterate over each element in the array, and add them to the linked list using the add method. Finally, we call the display method to print out the elements in the linked list.

#

To create a linked list from an array without using java.util, you can define a custom Node class and then iterate over the array to create the linked list. Here's an example implementation:

public class LinkedListFromArray {
    static class Node {
        int data;
        Node next;

        public Node(int data) {
            this.data = data;
            this.next = null;
        }
    }

    public static void main(String[] args) {
        int[] arr = {1, 2, 3, 4, 5};
        Node head = createLinkedList(arr);
        
        // Print the linked list
        printLinkedList(head);
    }

    public static Node createLinkedList(int[] arr) {
        if (arr.length == 0) {
            return null;
        }

        Node head = new Node(arr[0]);
        Node current = head;

        for (int i = 1; i < arr.length; i++) {
            current.next = new Node(arr[i]);
            current = current.next;
        }

        return head;
    }

    public static void printLinkedList(Node head) {
        if (head == null) {
            System.out.println("Linked list is empty");
            return;
        }

        Node current = head;

        while (current != null) {
            System.out.print(current.data + " ");
            current = current.next;
        }
    }
}

Output:

1 2 3 4 5
#

To create a linked list from an array without using java.util and passing the head as a parameter, you can define a custom Node class and use it to construct the linked list. Here's an example:

class Node {
    int data;
    Node next;

    public Node(int data) {
        this.data = data;
        this.next = null;
    }
}

public class LinkedListFromArray {
    public static void main(String[] args) {
        int[] array = {1, 2, 3, 4, 5};
        Node head = createLinkedListFromArray(array);
        printLinkedList(head);
    }

    public static Node createLinkedListFromArray(int[] array) {
        if (array.length == 0) {
            return null;
        }

        Node head = new Node(array[0]);
        Node current = head;

        for (int i = 1; i < array.length; i++) {
            current.next = new Node(array[i]);
            current = current.next;
        }

        return head;
    }

    public static void printLinkedList(Node head) {
        if (head == null) {
            System.out.println("Linked list is empty");
            return;
        }

        Node current = head;

        while (current != null) {
            System.out.print(current.data + " ");
            current = current.next;
        }
    }
}

This code creates a custom Node class that represents each element in the linked list. The createLinkedListFromArray method takes an array as input and constructs the linked list by iterating over the array elements and creating nodes. The printLinkedList method traverses the linked list and prints its elements.

In the main method, we create an example array {1, 2, 3, 4, 5} and pass it to the createLinkedListFromArray method to obtain the head of the linked list. Finally, we print the linked list using the printLinkedList method.