This is a C++ program to find SSSP (Single Source Shortest Path) in DAG (Directed Acyclic Graphs) using Dijkstra Algorithm to find out from the first node in graph to every other node with the shortest path length showed beside each pair of vertices.AlgorithmBegin    Take the elements of the ... Read More

To search multiple fields for multiple values in MongoDB, you can use $text and $search operator. Let us first create a collection with documents>db.searchMultipleFieldsDemo.insertOne({"_id":100, "FirstSubject":"Java", "SecondSubject":"MongoDB"}); { "acknowledged" : true, "insertedId" : 100 } >db.searchMultipleFieldsDemo.insertOne({"_id":101, "FirstSubject":"MongoDB", "SecondSubject":"MySQL"}); { "acknowledged" : true, "insertedId" : 101 } >db.searchMultipleFieldsDemo.insertOne({"_id":102, "FirstSubject":"MySQL", "SecondSubject":"Java"}); { "acknowledged" ... Read More

In this program we need to find the Edge Connectivity of a Graph. An Edge Connectivity of a Graph of a graph means it is a bridge, removing it graph will be disconnected. Number of connected components increases with the removing of bridge in a disconnected undirected graph.Functions and pseudocode:Begin ... Read More

You can achieve this with the help of prepared statement in MySQL. First you need to create a table. The query to create a table is as followsmysql> create table University - > ( - > UserId int, - > UniversityId ... Read More

Vertex Cover of a Graph is to find a set of vertices V, such that for every edge connecting M to N in graph, either M or N (or both) are present in V. In this program, we Implement a Heuristic to Find the Vertex Cover of a Graph.AlgorithmBegin   ... Read More

This example demonstrate about How to get default phone Network Country Iso in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.     ... Read More

To iterate over all MongoDB databases, you need to switch your database to admin. Following is the query to switch to admin and get information about all the databases> switchDatabaseAdmin = db.getSiblingDB("admin"); admin > allDatabaseName = switchDatabaseAdmin.runCommand({ "listDatabases": 1 }).databases;This will produce the following output[    {       ... Read More

A complete graph is a graph which has a connecting edge between any pair of vertices. This is a C++ Program to Perform Edge Coloring on Complete Graph.AlgorithmBegin    Take the input of the number of vertices ‘n’.    Construct a complete graph using e=n*(n-1)/2 edges, in ed[][].    Function ... Read More

Yes, it is possible to calculate a correlation in a query. To understand the correlation in a query, you need to first create a table. The query to create a table is as followsmysql> create table correlationDemo - > ( - > value float ... Read More

Consider a situation, when we have two persons with the same name, Zara, in the same class. Whenever we need to differentiate them definitely we would have to use some additional information along with their name, like either the area, if they live in different area or their mother’s or ... Read More