Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
Articles by Nishtha Thakur
Page 36 of 40
C++ Program to Implement Coppersmith Freivald’s Algorithm
Freivalds' algorithm determines whether the matrices are equal for a chosen k value with a probability of failure less than 2^-k in O(kn^2).It is used to verify matrix multiplication.AlgorithmBegin Take matrix1(n*n), matrix2(n*n), matrix3(n*n) as input. // According to the algorithm we have to verify: // matrix1 × matrix2 = matrix3. 1) Choose vector a[n][1] randomly and uniformly in which component will be 0 or 1. 2) Compute matrix2 * a, matrix3 * a and then matrix1 * (matrix2 * a) for evaluating the expression, matrix1 * (matrix2 * a) - matrix3 * a. 3) ...
Read MoreC++ Program to Represent Linear Equations in Matrix Form
This is a C++ program to represent Linear Equations in matrix form.AlgorithmBegin 1) Take the no of variables n and the coefficients of each variable as input. 2) Declare a matrix[n][n] and constant[n][1]. 3) Make for loops i = 0 to n-1 and j = 0 to n-1 to take the coefficients of each variable as the elements of the matrix. 4) Display the matrix by using nested for loops. EndExample#include using namespace std; int main(void) { char variable[] = { 'x', 'y', 'z', 'd' }; cout > n; cout > matrix[i][j]; } cin >> constant[i][0]; } cout
Read MoreC++ Program to Find Basis and Dimension of a Matrix
This is a C++ program to find Basis and Dimension of a Matrix.AlgorithmBegin Function determinant() : It calculates determinant of the matrix. /* Arguments: n = number of elements. matrix[10][10] = input matrix. */ declare the submatrix submatrix[10][10]. //Body of the function: if (n == 2) return ((matrix[0][0] * matrix[1][1]) - (matrix[1][0] * matrix[0][1])) else Make a for loop c = 0 to n-1 Declare and initialize submati = 0, submatj. ...
Read MoreWhich one is better in between pass by value or pass by reference in C++?
In C++ we can pass arguments into a function in different ways. These different ways are −Call by ValueCall by ReferenceCall by AddressSometimes the call by address is referred to as call by reference, but they are different in C++. Incall by address, we use pointer variables to send the exact memory address, but in call by reference we pass the reference variable (alias of that variable). This feature is not present in C, there we have to pass the pointer to get that effect.In this section, we will see what are the advantages of call by reference over call ...
Read MoreHow to use random () in Android sqlite?
Before getting into example, we should know what sqlite data base in android is. SQLite is an open source SQL database that stores data to a text file on a device. Android comes in with built in SQLite database implementation. SQLite supports all the relational database features. In order to access this database, you don't need to establish any kind of connections for it like JDBC, ODBC etc.This example demonstrate about How to use random () in Android sqliteStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to ...
Read MoreHow to use length () in Android textview?
This example demonstrate about How to use length () in Android textview.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. In the above code, we have taken the name as Edit text, when user click on button it will take data and check length of entered value is 0 or more than zero than returns last index of “sai”.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; ...
Read MoreMongoDB query with an 'or' condition?\\n
To understand the query with an or condition, let us create a collection with the document. The query to create a collection with a document is as follows −> db.orConditionDemo.insertOne({"CustomerName":"Larry", "ShippingDate":new ISODate("2018-01-29")}); { "acknowledged" : true, "insertedId" : ObjectId("5c8ec5262f684a30fbdfd56a") } > db.orConditionDemo.insertOne({"CustomerName":"Mike", "ShippingDate":new ISODate("2019-04-13")}); { "acknowledged" : true, "insertedId" : ObjectId("5c8ec5362f684a30fbdfd56b") } > db.orConditionDemo.insertOne({"CustomerName":"Bob", "ShippingDate":new ISODate("2019-02-21")}); { "acknowledged" : true, "insertedId" : ObjectId("5c8ec5422f684a30fbdfd56c") } > db.orConditionDemo.insertOne({"CustomerName":"David", "ShippingDate":new ISODate("2019-03-15")}); { "acknowledged" : true, "insertedId" : ObjectId("5c8ec5532f684a30fbdfd56d") } > db.orConditionDemo.insertOne({"CustomerName":"John", "ShippingDate":new ISODate("2019-03-19")}); { "acknowledged" : true, "insertedId" : ObjectId("5c8ec56c2f684a30fbdfd56e") }Display all documents ...
Read MoreC++ Program to Implement Modular Exponentiation Algorithm
This is a C++ program to implement Modular Exponentiation Algorithm.AlgorithmBegin function modular(): // Arguments: base, exp, mod. // Body of the function: initialize res = 1 while (exp > 0) if (exp mod 2 == 1) res= (res * base) % mod exp = exp left shift 1 base = (base * base) % mod return res. EndExample#include using namespace std; long long modular(long long base, long long exp, int mod) { long long res = 1; while (exp > 0) { if (exp % 2 == 1) res= (res * base) % mod; exp = exp >> 1; base = (base * base) % mod; } return res; } int main() { long long b, e; int mod; coutb; coute; coutmod; cout
Read MoreHow to use split () in Android textview?
This example demonstrate about How to use split () in Android textview.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. In the above code, we have taken name as Edit text, when user click on button it will take data and split the data using space regex.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.Button; import android.widget.EditText; import ...
Read MoreHow to remove data from treeset in Android?
This example demonstrates How to remove data from tree set in AndroidStep 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. In the above code, we have taken the name and record number as Edit text, when the user clicks on save button it will store the data into ArrayList. Click on delete ...
Read More