"Mastering DSA: Java Queue Implementation Tutorial"|wajidtech |wajidtech.com| wajidtechs смотреть онлайн

Welcome to "Mastering DSA: Java Queue Implementation Tutorial" by [Your Channel Name]! In this comprehensive tutorial, we'll dive deep into the world of Data Structures and Algorithms (DSA) as we explore how to implement a queue data structure using the Java programming language.

Queues are fundamental data structures in computer science, and understanding their implementation is crucial for solving various real-world problems efficiently. Whether you're a student preparing for coding interviews or a developer looking to enhance your problem-solving skills, this tutorial is designed to equip you with the knowledge and skills you need.

Here's what you can expect from this tutorial:



public class QueueExample {
private int maxSize;
private int[] queueArray;
private int front;
private int rear;
private int currentSize;

public QueueExample(int size) {
maxSize = size;
queueArray = new int[maxSize];
front = 0;
rear = -1;
currentSize = 0;
}

public void enqueue(int value) {
if (!isFull()) {
rear = (rear + 1) % maxSize;
queueArray[rear] = value;
currentSize++;
} else {
System.out.println("Queue is full. Cannot enqueue " + value);
}
}

public int dequeue() {
if (!isEmpty()) {
int removedValue = queueArray[front];
front = (front + 1) % maxSize;
currentSize--;
return removedValue;
} else {
System.out.println("Queue is empty. Cannot dequeue.");
return -1; // Return a sentinel value to indicate an empty queue
}
}

public int peek() {
if (!isEmpty()) {
return queueArray[front];
} else {
System.out.println("Queue is empty. Cannot peek.");
return -1; // Return a sentinel value to indicate an empty queue
}
}

public boolean isEmpty() {
return currentSize == 0;
}

public boolean isFull() {
return currentSize == maxSize;
}

public int size() {
return currentSize;
}

public static void main(String[] args) {
QueueExample queue = new QueueExample(5);

queue.enqueue(1);
queue.enqueue(2);
queue.enqueue(3);

System.out.println("Queue size: " + queue.size());

queue.dequeue();
queue.enqueue(4);

System.out.println("Queue size after dequeue and enqueue: " + queue.size());
}
}