BOINBB-089 peek() in Java’s Stack class: returns the top element without removing it. Now, have you ever wondered how peek() works in Stack? Let’s actually learn how peek() works in Stack.
How peek() works:
peek() uses the getLast() method of LinkedList to return the last element. Now, you’re thinking, what exactly is LinkedList? It’s a class in Java’s java.util package that provides a way to store and organize data in a sequential manner. It’s a doubly linked list, which means it’s a linked list with a reference to the previous and next node.
Now, let’s talk about LinkedList. LinkedList has methods like addFirst(), addLast(), getFirst(), getLast(), removeFirst(), removeLast() etc.
the getLast() method called by peek() actually returns the last element.
Now, the Stack class is a subclass of Vector, but Stack actually uses itself to store data.
Now, let’s talk about java.util.Stack class. The Stack class is a subclass of Vector, and it’s utilized for Stack data structure. It has methods like push(), pop(), empty(), search() etc.
Now, actually have you ever wondered how push() works? push() uses the addElement() method of Vector to add the element to the top of the Stack. Now, in the Stack class, the Vector is actually utilized as a array.
push() uses the addElement() method to add the element to the top of the Stack. This method is actually inherited from Vector.
Now, actually have you ever wondered what the addElement() method is? It’s a method that’s inherited from Vector. It actually adds the element to the bottom of the Vector. This has the same effect as pushing the element to the top of the Stack.
Now, let’s talk about it. The addElement() method is actually utilized in the push() method of Stack. The push() method actually calls the addElement() method to add the element to the top of the Stack. Now, that’s actually how push() works in Stack.
Now, actually have you ever wondered what pop() works? pop() uses the removeElement() method of Vector to remove the element from the top of the Stack. That’s actually how pop() works in Stack.
Now, actually have you ever wondered what the removeElement() method is? It’s a method that’s inherited from Vector. It actually removes the element from the bottom of the Vector. This has the same effect as popping the element from the top of the Stack.
Now, let’s talk about it. The removeElement() method is actually utilized in the pop() method of Stack. The pop() method actually calls the removeElement() method to remove the element from the top of the Stack. Now, that’s actually how pop() works in Stack.
Now, actually have you ever wondered what empty() actually works in Stack? empty() uses the isEmpty() method of Vector to return whether the Stack is empty or not. Now, that’s actually how empty() works in Stack.
Now, actually have you ever wondered what the isEmpty() method is? It’s a method that’s inherited from Vector. It actually returns whether the Vector is empty or not. This has the same effect as returning whether the Stack is empty or not.
Now, let’s talk about it. The isEmpty() method is actually utilized in the empty() method of Stack. The empty() method actually calls the isEmpty() method to return whether the Stack is empty or not. Now, that’s actually how empty() works in Stack.
Now, actually have you ever wondered what search() actually works in Stack? search() uses the indexOf() method of Vector to return the position of the element in the Stack. Now, that’s actually how search() works in Stack.
Now, actually have you ever wondered what the indexOf() method is? It’s a method that’s inherited from Vector. It actually returns the position of the element in the Vector. This has the same effect as returning the position of the element in the Stack.
Now, let’s talk about it. The indexOf() method is actually utilized in the search() method of Stack. The search() method actually calls the indexOf() method to return the position of the element in the Stack. Now, that’s actually how search() works in Stack.
Now, have you ever wondered how peek() actually works in Stack? peek() uses the getLast() method of LinkedList to return the top element without removing it.
Now, let’s talk about it. The getLast() method i
2010年2月9日
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