Answers for "java queue implementation"

31

java queue

import java.util.*;

Queue<Integer> queue = new LinkedList<Integer>();
// use non-primative types when constructing

// to add a value to the back of queue:
queue.add(7);

// to remove and return front value:
int next = queue.remove();

// to just return front value without removing:
int peek = queue.peek();
Posted by: Guest on March-16-2020
2

queue in java

queues, //add, remove, peek , size()
    Queue<Integer> q = new LinkedList<>();
	- Unlike stacks, a queue is open at both its ends. (one end enqueue & one end remove data, dequeue) FIFO
	- enqueue() − add (store) an item to the queue. 
	- dequeue() − remove (access) an item from the queue.
	- peek() − Gets the element at the front of the queue without removing it.
	- isfull() − Checks if the queue is full.
	- isempty() − Checks if the queue is empty.
      
      Queue<Integer> queue = new LinkedList<Integer>();
        queue.add(10);
        queue.add(20);
        int a = queue.remove();
        int peek = queue.peek();
        System.out.println(queue + " " + a); //[20] 10
Posted by: Guest on October-13-2021
-1

Java Queue

The Queue interface is available in java.util package and extends the Collection interface. The queue collection is used to hold the elements about to be processed and provides various operations like the insertion, removal etc. It is an ordered list of objects with its use limited to insert elements at the end of the list and deleting elements from the start of list i.e. it follows the FIFO or the First-In-First-Out principle.

LinkedList, ArrayBlockingQueue and PriorityQueue are the most frequently used implementations.
Posted by: Guest on August-31-2021

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