HelloWorld.cs

 using System;  // Importa o namespace System para permitir o uso de funcionalidades como entrada e saída de dados

class Program
{
    static void Main()  // Método principal que é o ponto de entrada do programa
    {
        // Array de números não ordenados para testar o algoritmo Quick Sort
        int[] numeros = { 33, 15, 10, 7, 40, 22 };  // Array fixo de números para ser ordenado

        // Chama a função QuickSort para ordenar o array
        QuickSort(numeros, 0, numeros.Length - 1);

        // Exibe o array ordenado
        Console.WriteLine("\nArray ordenado com Quick Sort:");
        foreach (int num in numeros)
        {
            Console.Write($"{num} ");  // Imprime cada número ordenado, separado por um espaço
        }
    }

    // Função que implementa o algoritmo de ordenação Quick Sort
    static void QuickSort(int[] array, int inicio, int fim)
    {
        if (inicio < fim)  // Verifica se há elementos para ordenar
        {
            int indicePivo = Particionar(array, inicio, fim);  // Particiona o array e obtém o índice do pivô
            QuickSort(array, inicio, indicePivo - 1);  // Ordena a sublista à esquerda do pivô
            QuickSort(array, indicePivo + 1, fim);  // Ordena a sublista à direita do pivô
        }
    }

    // Função que particiona o array e retorna o índice do pivô
    static int Particionar(int[] array, int inicio, int fim)
    {
        int pivo = array[fim];  // Seleciona o pivô como o último elemento do array
        int indiceMenor = inicio - 1;

        // Percorre o array para organizar elementos menores e maiores que o pivô
        for (int j = inicio; j < fim; j++)
        {
            if (array[j] <= pivo)  // Se o elemento atual é menor ou igual ao pivô, faz a troca
            {
                indiceMenor++;
                int temp = array[indiceMenor];
                array[indiceMenor] = array[j];
                array[j] = temp;
            }
        }

        // Coloca o pivô na posição correta no array
        int temp1 = array[indiceMenor + 1];
        array[indiceMenor + 1] = array[fim];
        array[fim] = temp1;

        return indiceMenor + 1;  // Retorna o índice do pivô
    }
}

created 1 month ago by Caio

C Sharp Online Compiler

Write, Run & Share C# code online using OneCompiler's C# online compiler for free. It's one of the robust, feature-rich online compilers for C# language, running on the latest version 8.0. Getting started with the OneCompiler's C# compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C# and start coding.

Read inputs from stdin

OneCompiler's C# online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

using System;
 
namespace Sample
{
  class Test
    {
      public static void Main(string[] args)
       {
         string name;
         name = Console.ReadLine();
         Console.WriteLine("Hello {0} ", name);
	}
     }
}

About C Sharp

C# is a general purpose object-oriented programming language by Microsoft. Though initially it was developed as part of .net but later it was approved by ECMA and ISO standards.

You can use C# to create variety of applications, like web, windows, mobile, console applications and much more using Visual studio.

Syntax help

Data types

Data Type	Description	Range	size
int	To store integers	-2,147,483,648 to 2,147,483,647	4 bytes
double	to store large floating point numbers with decimals	can store 15 decimal digits	8 bytes
float	to store floating point numbers with decimals	can store upto 7 decimal digits	4 bytes
char	to store single characters	-	2 bytes
string	to stores text	-	2 bytes per character
bool	to stores either true or false	-	1 bit

Variables

Syntax

datatype variable-name = value;

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition or set of few conditions IF-ELSE is used.

if(conditional-expression) {
   // code
} 
else {
   // code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression) {    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
...    
    
default:     
 // code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement) {
  // code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while(condition) {
 // code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {
  // code 
} while (condition);

Arrays

Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.

Syntax

data-type[] array-name;

Methods

Method is a set of statements which gets executed only when they are called. Call the method name in the main function to execute the method.

Syntax

static void method-name() 
{
  // code to be executed
}