Queue

 Queue    




Demonstration of queue using linked list in JAVA  

package com.company;
import java.util.Queue;
import java.util.LinkedList;
public class Main {

    public static void main(String[] args) {
   // write your code here
        Queue<Integer> q = new LinkedList<>();

        q.add(10);
        q.add(1);
        q.add(8);
        q.add(4);
        q.add(7);
        q.add(89);

        System.out.println("The queue is: " + q);
    }
}
The queue is: [10, 1, 8, 4, 7, 89]

Process finished with exit code 0
Show peak of queue  
package com.company;
import java.util.Queue;
import java.util.LinkedList;
public class Main {

    public static void main(String[] args) {
   // write your code here
        Queue<Integer> q = new LinkedList<>();

        q.add(6);
        q.add(1);
        q.add(8);
        q.add(4);
        q.add(7);
        q.add(89);

        System.out.println("The queue is: " + q);
        int peek = q.peek();
        
        System.out.println(peek);
    }
}
The queue is: [6, 1, 8, 4, 7, 89]
6
vpackage com.company;
import java.util.Queue;
import java.util.LinkedList;
public class Main {

    public static void main(String[] args) {
   // write your code here
        Queue<Integer> q = new LinkedList<>();

        q.add(6);
        q.add(1);
        q.add(8);
        q.add(4);
        q.add(7);
        q.add(89);

        System.out.println("The queue is: " + q);
        int peek = q.peek();

        System.out.println("Front element in queue : " +peek);
        int removeElement = q.remove();//removeElement store the removed element from queue

        System.out.println("After removing :  "+q);
        System.out.println("Element removed : "+removeElement);
    }
}
The queue is: [6, 1, 8, 4, 7, 89]
Front element in queue : 6
After removing :  [1, 8, 4, 7, 89]
Element removed : 6

size of the queue
int size = q.size();
System.out.println("The size of element is : "+size);
The size of element is : 5

Comments

Post a Comment

Popular posts from this blog

the distance between two cities (in km is input through the keyboard. write a program to convert and print this distance in meter ,feet inches and centimeter.

11 . The distance between two cities (in km is input through the keyboard. write a program to convert and print this distance in meter ,feet inches and centimeter. package com.company ; import java.util.Scanner ; public class Main { public static void main ( String [] args ) { // write your code here System . out . print ( "Enter distance between two cities : " ); Scanner sc = new Scanner ( System . in ); //sc is scanner name double distance , meter , feet , inches , centimetres ; //variable is declared distance = sc . nextDouble (); //taking input from user (in km) meter = distance * 1000 ; //1km = 1000m feet = distance * 3280.8399 ; //1km = 3280.8399; inches = distance * 39370.0787 ; //1km = 39370.0787; centimetres = distance * 100000 ; //1km = 100000; System . out . println ( distance + " kilometer = " + meter + " meter" ); System . out . println ( distance + " k
Read more

CREATE UNIT CONVERTER APP

Image
CREATE UNIT CONVERTER APP USING XML AND JAVA IN ANDROID STUDIO xml code :- <? xml version ="1.0" encoding ="utf-8" ?> < androidx.constraintlayout.widget.ConstraintLayout xmlns: android ="http://schemas.android.com/apk/res/android" xmlns: app ="http://schemas.android.com/apk/res-auto" xmlns: tools ="http://schemas.android.com/tools" android :layout_width ="match_parent" android :layout_height ="match_parent" android :background ="#F8E753" tools :context =".MainActivity" > < EditText android :id ="@+id/editTextTextPersonName" android :layout_width ="wrap_content" android :layout_height ="wrap_content" android :ems ="10" android :inputType ="number" android :textColor ="#E91E63" app :layout_constraintBottom_toBottomOf ="parent"
Read more

write a program to check whether a triangle is valid or not, when the threeangles of the triangle are entered through the keyboard. A triangle is valid if the sumof all the three angles is equal to 180 degrees

  /*write a program to check whether a triangle is valid or not, when the three angles of the triangle are entered through the keyboard. A triangle is valid if the sum of all the three angles is equal to 180 degrees. */ package com.company ; import javax.security.sasl. SaslClient ; import java.util.Scanner ; public class Main { public static void main ( String [] args ) { // write your code here int a , b , c , sum ; //angle of triangle Scanner angle = new Scanner ( System . in ); System . out . print ( "side a : " ); a = angle . nextInt (); System . out . print ( "side b : " ); b = angle . nextInt (); System . out . print ( "side c : " ); c = angle . nextInt (); //sum of angle of trinagle sum = a + b + c ; if ( sum == 180 ) { System . out . println ( "Triangle is valid" ); } else System . out . println (
Read more