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Articles on Trending Technologies
Technical articles with clear explanations and examples
C++ code to find out which number can be greater
Suppose, we are given two k-digit numbers m and n. The digits of the numbers are randomly shuffled and then compared. We have to find out which number has a higher probability to be greater.So, if the input is like n = 231, m = 337, k = 3, then the output will be ‘Second’, or the second number has a higher probability to be greater.StepsTo solve this, we will follow these steps −s1 := convert n to string s2 := convert m to string f := 0, s = 0 for initialize i := 0, when i < k, ...
Read MoreC++ code to find out if a name is male or female
Suppose, we are given n strings in an array 'input'. The strings are names, we have to find out if they are male or female names. If a name ends with 'a', 'e', 'i', or 'y'; it can be said that it is a female name. we print 'male' or 'female' for each input in the string.So, if the input is like n = 5, input = {"Lily", "Rajib", "Thomas", "Riley", "Chloe"}, then the output will be Female, Male, Male, Female, Female.StepsTo solve this, we will follow these steps −for initialize i := 0, when i < n, update (increase ...
Read MoreC++ code to find the number of scans needed to find an object
Suppose, we are given a grid of dimensions m x n. An object is placed at cell (ix, iy) and we have to find the object scanning from a starting position (sx, sy). The scanning algorithm scans the ith row and the j-th column of the grid if it is located at cell (i, j) of the grid. If it has found the object, the scanning stops; if not, the scanning pointer moves to cell in position (i + 1, j + 1) and then scans in the same way. This continues until the item is found. Given the positions, ...
Read MoreC++ code to find the number of refill packs to be bought
Suppose, there are 'a' number of matches and 'b' number of press conferences to be held in a stadium in a particular week. There are two cafeterias, one in the player dressing room and one in the press conference area. There are two soft drink dispensers in the cafeterias and they need to be filled at the start of the week. The dressing room cafeteria drink dispenser is used heavily, and it needs to be refilled after every 'c' games and the conference area cafeteria's dispenser needs to be refilled after every 'd' events. The stadium maintenance committee can order ...
Read MoreC++ code to find out if everyone will get ice cream
Suppose, there are three groups of people coming to a party. The first group of people likes butterscotch ice cream and do not like any other flavors of ice cream, the second group of people only dislikes strawberry ice cream and like every other flavor, and the third group likes all kinds of ice cream. Now, there are x people of the first group, y people of the second group, and z people of the third group are coming to a party, and everyone should have at least one icecream of their liking. The party organizers have brought a packs ...
Read MoreC++ code to find out if a grid is fully accessible
Suppose, we are given a grid that has 2 rows and n columns. A robot is at position (0, 0) in the grid and wants to visit (1, n - 1) by visiting adjacent and corner cells to its current location. We are given the grid in an array of strings, a cell is blocked if it is marked '#' and it is accessible if it is marked '.'. We have to find out if the robot can visit cell (1, n - 1) from the cell (0, 0).So, if the input is like n = 4, grid = {".##.", ...
Read MoreC++ code to find total elements in a matrix
Suppose, we are given a matrix of n rows and m columns. We have to find out the number of elements present in it. We find out the value and display it as output.So, if the input is like n = 20, m = 15, then the output will be 300.StepsTo solve this, we will follow these steps −return n * mExampleLet us see the following implementation to get better understanding −#include using namespace std; #define N 100 int solve(int n, int m) { return n * m; } int main() { int n = 20, m = 15; cout
Read MoreExpress.js – router.param() Method
router.param(name, callback) adds a callback to the route parameters where name defines the name of the parameter and callback is the callback function.Following are the parameters of the callback function −req – the request objectres – the response objectnext -- the next middlewarename – value of the name parameterSyntaxrouter.param( name, callback )ExampleCreate a file with the name "routerParam.js" and copy the following code snippet. After creating the file, use the command "node routerParam.js" to run this code as shown in the example below −// router.param() Method Demo Example // Importing the express module var express = require('express'); // Importing ...
Read MoreSkipping middleware in Express.js
You need to pass some parameters to skip the middleware in an Express application. On the basis of that parameter with logic in place, you can decide whether to execute a middleware or notSyntaxThere is no syntax defined. You can introduce a parameter and then check based upon that parameter whether to use the middleware or not.ExampleCreate a file with the name "skipMiddleware.js" and copy the following code snippet. After creating the file, use the command "node skipMiddleware.js" to run this code as shown in the example below −// app.set() Demo Example // Importing the express module var express ...
Read MoreSending HTTP error code using Express.js
We can send different HTTP status and responses over the Express.js app endpoint as per the user's requirement. Also we can send a message in case of an error or when the requests are forbidden. The status code 200 is sent by default with the response returned.Syntaxres.status( statusCode )Example 1Create a file with the name "status.js" and copy the following code snippet. After creating the file, use the command "node status.js" to run this code as shown in the example below −// Specifying status code Demo Example // Importing the express module var express = require('express'); // Initializing ...
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