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When performing an operation in the JShell tool, it displays a message in return (success of the command, error, and type of a variable created as well as its value). It has been customized using the command: "/set feedback". This command displays the type of return currently configured as well as the different return modes available.jshell> /set feedback | /set feedback normal | | Available feedback modes: | concise | normal | silent | verboseThere are four feedback modes available in JShell as listed below:1) /set feedback normal: This is the default JShell feedback. When we evaluate an expression, JShell returns the corresponding result and an ... Read More
In this tutorial, we will be discussing a program to understand map equal_range in C++ STL.This function returns a pair of iterators that bounds the range of the container in which the key equivalent to the given parameter resides.Example Live Demo#include using namespace std; int main() { //initializing container map mp; mp.insert({ 4, 30 }); mp.insert({ 1, 40 }); mp.insert({ 6, 60 }); pair it; it = mp.equal_range(1); cout
In this tutorial, we will be discussing a program to get maximum of all subarrays of size k using set in C++ STL.For this we will be provided with a array of size N and integer K. Our task is to get the maximum element in each K elements, add them up and print it out.Example Live Demo#include using namespace std; //returning sum of maximum elements int maxOfSubarrays(int arr[], int n, int k){ set q; set::reverse_iterator it; //inserting elements for (int i = 0; i < k; i++) { q.insert(pair(arr[i], i)); } ... Read More
In this tutorial, we will be discussing a program to create a menu driven program for a simple calculator.This program will give user the ability to choose among the following mathematical operations − addition, subtraction, multiplication, division, HCF and LCM.Example Live Demo#include using namespace std; //displaying the menu void menu(){ cout
In this tutorial, we will be discussing a program to understand Multiset in C++ STL (Standard Template Library).Multiset are associative containers much similar to sets. The one difference multiset holds is they can even contain duplicate values.Example Live Demo#include #include #include using namespace std; int main(){ multiset gquiz1; //inserting values gquiz1.insert(40); gquiz1.insert(30); gquiz1.insert(60); gquiz1.insert(20); gquiz1.insert(50); gquiz1.insert(50); gquiz1.insert(10); multiset :: iterator itr; cout
For validation in MongoDB, use validator. Following is the query to create validation on collection in MongoDB −> db.createCollection( "demo437" , { ... validator: { $jsonSchema: { ... bsonType: "object", ... required: [ "FirstName", "LastName"], ... properties: { ... FirstName: { ... bsonType: "string", ... description: "This is required" }, ... LastName: { ... bsonType: "string", ... ... Read More
In this tutorial, we will be discussing a program to understand multiset lower_bound() in C++ STL.The function lower_bound() returns the first existence of the element in the container equivalent to the provided parameter, else it returns the element immediately bigger than that.Example Live Demo#include using namespace std; int main(){ multiset s; s.insert(1); s.insert(2); s.insert(2); s.insert(1); s.insert(4); cout
In this tutorial, we will be discussing a program to understand multiset upper_bound() in C++ STL.The function upper_bound() returns the pointer to an element which is bigger than the one provided as a parameter, else it returns the pointer to the last element in the container.Example Live Demo#include using namespace std; int main(){ multiset s; s.insert(1); s.insert(3); s.insert(3); s.insert(5); s.insert(4); cout
Let us first create a table −mysql> create table DemoTable2015 -> ( -> StudentId int, -> StudentName varchar(20), -> StudentCountryName varchar(20) -> ); Query OK, 0 rows affected (1.20 sec)Insert some records in the table using insert command −mysql> insert into DemoTable2015 values(1, 'Chris', 'US'); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable2015 values(2, 'Bob', 'UK'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable2015 values(3, 'David', 'AUS'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable2015 values(4, 'Robert', 'US'); Query OK, 1 ... Read More
In this tutorial, we will be discussing a program to understand negative_binomial_distribution in C++.This function follows the negative Binomial discrete distribution and produces integers according to this random distribution.Example Live Demo#include using namespace std; int main() { //setting number of experiments const int exps = 10000; const int numberstars = 100; default_random_engine generator; negative_binomial_distribution distribution(4, 0.5); int p[10] = {}; for (int i = 0; i < exps; ++i) { int counting = distribution(generator); if (counting < 10) ++p[counting]; } cout