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java stack methods

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gritter97 answered on March 16, 2020 Popularity 10/10 Helpfulness 4/10

answer java stack methods

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java stack methods

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import java.util.Stack<E>;
Stack<Integer> myStack = new Stack<Integer>();
myStack.push(1);
myStack.pop();
myStack.peek();
myStack.empty(); // True if stack is empty

Popularity 10/10 Helpfulness 4/10 Language java

Source: Grepper

Tags: java methods stack

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Contributed on Apr 06 2020

gritter97

0 Answers Avg Quality 2/10

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java stack

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// construct with non-primative elements only!
Stack<String> stack = new Stack<String>();

// to add a value to the top of the stack:
stack.push("Hello");

// to return and remove a value from the top:
String top = stack.pop();

// to return a value without removing it:
String peek = stack.peek();

Popularity 10/10 Helpfulness 5/10 Language java

Source: Grepper

Tags: java

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Contributed on Mar 16 2020

Abbot Of Boolean Zen

0 Answers Avg Quality 2/10

java stack

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import java.util.Stack;

public class StackExample {
    public static void main(String[] args) {
        // Create a stack
        Stack<String> stack = new Stack<>();

        // Push elements onto the stack
        stack.push("Element 1");
        stack.push("Element 2");
        stack.push("Element 3");

        // Pop elements from the stack
        String poppedElement = stack.pop();
        System.out.println("Popped element: " + poppedElement);

        // Peek at the top element without removing it
        String topElement = stack.peek();
        System.out.println("Top element: " + topElement);

        // Check if the stack is empty
        boolean isEmpty = stack.isEmpty();
        System.out.println("Is stack empty? " + isEmpty);

        // Get the size of the stack
        int size = stack.size();
        System.out.println("Stack size: " + size);
    }
}

Popularity 9/10 Helpfulness 4/10 Language java

Source: chat.openai.com

Tags: java

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Contributed on Dec 13 2023

Enthusiastic Elk

0 Answers Avg Quality 2/10

Stack java

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// Java program to Implement a stack
// using singly linked list
// import package
import static java.lang.System.exit;
 
// Driver code
class GFG {
    public static void main(String[] args)
    {
        // create Object of Implementing class
        StackUsingLinkedlist obj
            = new StackUsingLinkedlist();
        // insert Stack value
        obj.push(11);
        obj.push(22);
        obj.push(33);
        obj.push(44);
 
        // print Stack elements
        obj.display();
 
        // print Top element of Stack
        System.out.printf("\nTop element is %d\n",
                          obj.peek());
 
        // Delete top element of Stack
        obj.pop();
        obj.pop();
 
        // print Stack elements
        obj.display();
 
        // print Top element of Stack
        System.out.printf("\nTop element is %d\n",
                          obj.peek());
    }
}
 
// Create Stack Using Linked list
class StackUsingLinkedlist {
 
    // A linked list node
    private class Node {
 
        int data; // integer data
        Node link; // reference variable Node type
    }
    // create global top reference variable global
    Node top;
    // Constructor
    StackUsingLinkedlist() { this.top = null; }
 
    // Utility function to add an element x in the stack
    public void push(int x) // insert at the beginning
    {
        // create new node temp and allocate memory
        Node temp = new Node();
 
        // check if stack (heap) is full. Then inserting an
        //  element would lead to stack overflow
        if (temp == null) {
            System.out.print("\nHeap Overflow");
            return;
        }
 
        // initialize data into temp data field
        temp.data = x;
 
        // put top reference into temp link
        temp.link = top;
 
        // update top reference
        top = temp;
    }
 
    // Utility function to check if the stack is empty or
    // not
    public boolean isEmpty() { return top == null; }
 
    // Utility function to return top element in a stack
    public int peek()
    {
        // check for empty stack
        if (!isEmpty()) {
            return top.data;
        }
        else {
            System.out.println("Stack is empty");
            return -1;
        }
    }
 
    // Utility function to pop top element from the stack
    public void pop() // remove at the beginning
    {
        // check for stack underflow
        if (top == null) {
            System.out.print("\nStack Underflow");
            return;
        }
 
        // update the top pointer to point to the next node
        top = (top).link;
    }
 
    public void display()
    {
        // check for stack underflow
        if (top == null) {
            System.out.printf("\nStack Underflow");
            exit(1);
        }
        else {
            Node temp = top;
            while (temp != null) {
 
                // print node data
                System.out.print(temp.data);
 
                // assign temp link to temp
                temp = temp.link;
                if(temp != null)
                    System.out.print(" -> ");
            }
        }
    }
}

Popularity 10/10 Helpfulness 2/10 Language java

Source: www.geeksforgeeks.org

Tags: java

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Contributed on Nov 15 2022

Muhammad Zainal Muttaqin

0 Answers Avg Quality 2/10

Java Stack Declaration

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-1

public class Stack<E> extends Vector<E>

Popularity 10/10 Helpfulness 1/10 Language java

Source: softhunt.net

Tags: declaration decl

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Contributed on May 25 2022

Outrageous Ostrich

0 Answers Avg Quality 2/10

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