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Articles by Nancy Den
Page 18 of 18
C++ Program to Implement Dijkstra’s Algorithm Using Set
This is a C++ Program to Implement Dijkstra’s Algorithm using Set. Here we need to have two sets. We generate a shortest path tree with given source node as root. One set contains vertices included in shortest path tree and other set includes vertices not yet included in shortest path tree. At every step, we find a vertex which is in the other set (set of not yet included) and has minimum distance from source.Algorithm:Begin function dijkstra() to find minimum distance: 1) Create a set Set that keeps track of vertices included in shortest path tree, Initially, ...
Read MoreHow to insert images in Database using JDBC?
The setBinaryStream() method of the PreparedStatement interface accepts an integer representing the index of the parameter and an InputStream object and sets the parameter to the given InputStream object. Whenever you need to send very large binary value you can use this method.And SQL databases provide a datatype named Blob (Binary Large Object) in this you can store large binary data like images.Storing image using JDBCIf you need to store an image in a database using the JDBC program create a table with a Blob datatype as shown below:CREATE TABLE Tutorial(Name VARCHAR(255), Type INT NOT NULL, Logo BLOB);Now, using JDBC, connect ...
Read MoreC++ Program to Implement First Fit Decreasing for 1-D Objects and M Bins
Here is a C++ Program to implement First Fit Decreasing for 1-D objects and M binsRequired functions and pseudocode:Begin function binPack() returns number of bins required. Initialize binC = 0 Initialize an array to store binVal. Place items one by one. function sort() to perform bubble sort in the descending order. EndExample Code#include using namespace std; void binPack(int *a, int s, int n) { int binC = 0; int binVal[n]; for (int i = 0; i < n; i++) binVal[i] = s; for (int i = 0; i < ...
Read MoreWrite an JDBC example for inserting value for Blob datatype into a table?
Assume we already have a table named MyTable in the database with the following description.+-------+--------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------+--------------+------+-----+---------+-------+ | Name | varchar(255) | YES | | NULL | | | image | blob | YES | | NULL | | +-------+--------------+------+-----+---------+-------+If you need to ...
Read MoreHow to insert an image in to Oracle database using Java program?
To hold an image in Oracle database generally blob type is used. Therefore, make sure that you have a table created with a blob datatype as:Name Null? Type ----------------------------------------- -------- ---------------------------- NAME VARCHAR2(255) IMAGE BLOBTo insert an image in to Oracle database, follow the steps given below:Step 1: Connect to the databaseYou can connect to a database using the getConnection() method of the DriverManager classConnect to the Oracle database by passing the Oracle URL which is jdbc:oracle:thin:@localhost:1521/xe (for express edition), username and password as parameters to the getConnection() method.String oracleUrl = "jdbc:oracle:thin:@localhost:1521/xe"; Connection con = DriverManager.getConnection(oracleUrl, "user_name", "password");Step 2: Create ...
Read MoreWhat is the difference between the methods setBlob() and setBinaryStream() which is preferable in JDBC?
The setBlob() method is used to set value for Blob datatype in the database. It has three variants as follows:void setBlob(int parameterIndex, Blob x): Sets the given Blob value to the parameter at the specified index.void setBlob(int parameterIndex, InputStream inputStream): Sets the contents of the given input stream as a value to the parameter at the specified index.void setBlob(int parameterIndex, InputStream inputStream, long length): Sets the contents of the given input stream as a value to the parameter at the specified index.The setBinaryStream() method is used to set the contents of the given InputStream as a value for the parameter ...
Read MoreFind objects between two dates in MongoDB?
Use operator $gte and $lt to find objects between two dates in MongoDB. To understand these operators, let us create a collection.Creating a collection here:>db.order.insert({"OrderId":1, "OrderAddrees":"US", "OrderDateTime":ISODate("2019-02-19")}; WriteResult({ "nInserted" : 1 }) >db.order.insert({"OrderId":2, "OrderAddrees":"UK", "OrderDateTime":ISODate("2019-02-26")}; WriteResult({ "nInserted" : 1 })Display all documents from the collection with the help of find() method. The query is as follows:> db.order.find().pretty();The following is the output:{ "_id" : ObjectId("5c6c072068174aae23f5ef57"), "OrderId" : 1, "OrderAddrees" : "US", "OrderDateTime" : ISODate("2019-02-19T00:00:00Z") } { "_id" : ObjectId("5c6c073568174aae23f5ef58"), "OrderId" : 2, "OrderAddrees" : "UK", "OrderDateTime" : ISODate("2019-02-26T00:00:00Z") }Here is the query ...
Read MoreHTML5 applicationCache vs Browser Cache
HTML5 applicationCacheIt can be understood by an example that a web application is cached, and accessible without a connected internet. Application cache has some advantages: users can use the application when they're offline, cached resources load faster and reduced server load. Browser cache Web browsers use caching to store HTML web pages by storing a copy of visited pages. After that, the copy is used to render when you visit that page again
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