Posted on

Find the first and second largest number in a series – without using arrays or functions

This is just a revision of my school memories. Language used is Java.







import java.util.Scanner;



public class testmain {

    public static void main(String[] args) {


        int large = 0; // there is a possible logic error, ignore

        int slarge = 0; // there is a possible logic error, ignore



        Scanner scanner = new Scanner(System.in);

        System.out.println("Enter the number of elements");

        int N = scanner.nextInt();



        for (int c = 0;c<N;c++) {

            int num = scanner.nextInt();



            if (num > large) {

                large = num;

            }


            if (num != large && num > slarge) {

                slarge = num;

            }


        }

        System.out.println(

                "Largest = " + large +

                        "\nSecond Largest = " + slarge

        );

    }

}



	


	





		

		
Posted on 
Upload/Download file to/fro MongoDB in Java
	


	
	

		


// This code is just for my reference


 public static void main(String[] args) {
        Logger mongoLogger = Logger.getLogger( "org.mongodb.driver" );
        mongoLogger.setLevel(Level.SEVERE);

        MongoClient mongoClient = MongoClients.create();
        MongoDatabase database = mongoClient.getDatabase("testdb");

        GridFSBucket gridFSFilesBucket = GridFSBuckets.create(database);
        ObjectId fileId = new ObjectId();
        try {

            InputStream streamToUploadFrom = new FileInputStream(new File("d:\\200mb.mkv"));

//            GridFSUploadOptions options = new GridFSUploadOptions()
//                    .chunkSizeBytes(1000)
//                    .metadata(new Document("type", "presentation"));

            fileId = gridFSFilesBucket.uploadFromStream("myfile", streamToUploadFrom);

            System.out.println("ObjectID" + fileId);
        } catch(FileNotFoundException ex) {
            System.out.println("Error" + ex.getMessage());
        }


        try {
            FileOutputStream streamToDownloadTo = new FileOutputStream("d:/out.mkv");
            gridFSFilesBucket.downloadToStream(fileId , streamToDownloadTo);
            streamToDownloadTo.close();
            System.out.println("Finished!");
        } catch (IOException e) {
            // handle exception
        }
    }