Determine if an integer is a prime number

PHOTO

Fri Jan 19 2024 18:39:04 GMT+0000 (Coordinated Universal Time)

Saved by @destinyChuck #html #css #javascript

var number;
Console.WriteLine("Enter a number:");
number = Convert.ToInt32(Console.ReadLine());
if (IsPrime(number))
{
    Console.WriteLine("**" + number + " is a prime number**");
}
else
{
    Console.WriteLine("**" + number + " is not a prime number**");
}

public static bool IsPrime(int number)
{
    if (number <= 1) return false;
    if (number == 2) return true;
    if (number % 2 == 0) return false;
    var boundary = (int)Math.Floor(Math.Sqrt(number));
    for (int i = 3; i <= boundary; i += 2)
        if (number % i == 0)
            return false;
    return true;
}

COPY

Here is a C# program that checks if a number is prime: The `IsPrime` method takes an integer as input and returns a boolean value indicating whether the number is prime or not. The method first checks if the number is less than or equal to 1, in which case it returns `false`. If the number is 2, it returns `true`. If the number is even, it returns `false`. Otherwise, it checks if the number is divisible by any odd integer between 3 and the square root of the number (inclusive). If it is, the method returns `false`. Otherwise, it returns `true` ¹²³. I hope this helps! Source: Conversation with Bing, 1/19/2024 (1) c# - Check if number is prime number - Stack Overflow. https://stackoverflow.com/questions/15743192/check-if-number-is-prime-number. (2) c# program for finding if number is prime - Stack Overflow. https://stackoverflow.com/questions/13188604/c-sharp-program-for-finding-if-number-is-prime. (3) Prime Numbers in C#: A Detailed Guide - DEV Community. https://dev.to/bytehide/prime-numbers-in-c-a-detailed-guide-442n. (4) github.com. https://github.com/Yahkem/ConsoleRSA/tree/2415dc2adf56fb5dd7a570a3f208ad1f2ec284dc/ConsoleRSA%2FProgram.cs. (5) github.com. https://github.com/juang77/NextPrime/tree/6355157c48c3c6a0e034043eb2343a4c1f276f24/NextPrime%2FProgram.cs. (6) github.com. https://github.com/YoanMoskov/SoftUni-Software-Engineering/tree/85e136fab9457165f41b956afe5b9dda321fc861/C%23-Basic%2F07.NestedLoops_Excercises%2FHomework%2F04.Sum%20Prime%20Non%20Prime%20Numbers%2FProgram.cs. (7) github.com. https://github.com/rochoMonsta/Training/tree/c6f0dd04a2db022ef882a125bf813c8b42ef5a11/CodeWars%20examples%2FBackwards_Read_Primes%2FProgram.cs. (8) github.com. https://github.com/ghantatwins/lotalot/tree/bb16c0ea586ee98cd4145d2c11619ae6b051d9bc/LottoPlayGround%2FLottoData.Lib%2FFactories%2FFeaturesFactory.cs.

https://www.bing.com/search?q=Bing%20AI&showconv=1&form=M403X3

Save snippets that work from anywhere online with our extensions

Comments

C#

@destinyChuck

Determine if an integer is a prime number

#html #javascript #nodejs

How to Save HTML Form Data in JSON - Express

<form action="/new" method="post">
 
  <input name="title" type="text">
  <input name="description" type="text">
  <button type="submit">Submit Form</button>
 
</form>

> More steps

#javascript

Get URL and URL Parts in JavaScript

var newURL = window.location.protocol + "//" + window.location.host + "/" + window.location.pathname + window.location.search

#javascript

Add event listener to multiple buttons with the same class

    btns = document.getElementsByClassName("saveBtn");
    for (var i = 0; i < btns.length; i++) {
        btns[i].addEventListener("click", function () {
			//Add function here
        });
    }

#javascript

Replace Textarea with Codemirror editor

<link rel="stylesheet" type="text/css" href="plugin/codemirror/lib/codemirror.css">

<body>
	<textarea class="codemirror-textarea"></textarea>
</body>

<script>

$(document).ready(function(){
    var codeText = $(".codemirror-textarea")[0];
    var editor = CodeMirror.fromTextArea(codeText, {
        lineNumbers : true
    });
});

</script>

<script type="text/javascript" src="plugin/codemirror/lib/codemirror.js"></script>

#javascript #nodejs #commandline

HTTPS Redirect in Nodejs

npm install heroku-ssl-redirect

> More steps

#css

A Modern CSS Reset - Piccalilli

/* Box sizing rules */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Remove default margin */
body,
h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd {
  margin: 0;
}

/* Remove list styles on ul, ol elements with a list role, which suggests default styling will be removed */
ul[role='list'],
ol[role='list'] {
  list-style: none;
}

/* Set core root defaults */
html:focus-within {
  scroll-behavior: smooth;
}

/* Set core body defaults */
body {
  min-height: 100vh;
  text-rendering: optimizeSpeed;
  line-height: 1.5;
}

/* A elements that don't have a class get default styles */
a:not([class]) {
  text-decoration-skip-ink: auto;
}

/* Make images easier to work with */
img,
picture {
  max-width: 100%;
  display: block;
}

/* Inherit fonts for inputs and buttons */
input,
button,
textarea,
select {
  font: inherit;
}

/* Remove all animations, transitions and smooth scroll for people that prefer not to see them */
@media (prefers-reduced-motion: reduce) {
  html:focus-within {
   scroll-behavior: auto;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

#javascript #nodejs

Save to MongoDB without Duplicates Using Mongoose

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

const exampleSchema = new Schema({
    title: { type: String , required: true},
    content: [{type: String}]
});


var Example = mongoose.model('Example', exampleSchema);
module.exports = Example;

> More steps

#html #javascript #jsfunctions #dom #dommanipulation

getAttribute() - how to get the value of any attribute of HTML element

<html>

<input id="contact" name="address">

<script>

    var x = document.getElementById("contact").getAttribute('name');

</script>

</html>

#javascript

Full Stack Developer

function full_stack_developer() {
    full_stack_developer();
}

#javascript

3 Ways To Detect Selenium Bots Using Javascript - CodingTutz

if (navigator.webdriver) {
    document.body.innerHTML = "This is a Bot";
}

#html #jquery #css #navbar

Underline active navbar link

// in css:
/* Display line under clicked navbar link */
.active {
  text-decoration-line: underline !important;
  text-decoration-thickness: 2px !important;
  color: rgb(20, 19, 19);
}

//in html: 
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>

    <script>
      $(document).ready(function () {
        // Underline to remain in navbar after click using URL
        jQuery(function ($) {
          var path = window.location.href; // because the 'href' property of the DOM element is the absolute path
          $('.nav-link').each(function () {
            if (this.href === path) {
              $(this).addClass('active');
            }
          });
        });
      });
    </script>

//Note class in link should be nav-link

#javascript #promises #howto

How to Get the Domain From A URL Using Javascript

var url = "http://scratch99.com/web-development/javascript/";
var urlParts = url.replace('http://','').replace('https://','').split(/[/?#]/);
var domain = urlParts[0];

#javascript #javascript #functions #parameters

Required Parameters for Functions in JavaScript

 const isRequired = () => { throw new Error('param is required'); };

const hello = (name = isRequired()) => { console.log(`hello ${name}`) };

// These will throw errors
hello();
hello(undefined);

// These will not
hello(null);
hello('David');
The idea here is that it uses default parameters, like how the b parameter here has a default if you don’t send it anything:
function multiply(a, b = 1) {
  return a * b;
}

#javascript

Mapping an Object

const object1 = {
  a: 'somestring',
  b: 42
};

for (let [key, value] of Object.entries(object1)) {
  console.log(`${key}: ${value}`);
}

#javascript

Copy Text to Clipboard with Line Breaks

function copyToClipboard(){

    var codeToBeCopied = document.getElementById('code-snippet').innerText;
    var emptyArea = document.createElement('TEXTAREA');
    emptyArea.innerHTML = codeToBeCopied;
    const parentElement = document.getElementById('post-title');
    parentElement.appendChild(emptyArea);

    emptyArea.select();
    document.execCommand('copy');

    parentElement.removeChild(emptyArea);
    M.toast({html: 'Code copied to clipboard'})

    }

Determine if an integer is a prime number

Save snippets that work from anywhere online with our extensions

Comments

More like this

C#

Browse more snippets >>

Determine if an integer is a prime number

Save snippets that work from anywhere online with our extensions

Comments

More like this

C#

Browse more snippets >>

Embed code snippet