A guruh talabasi Rahimboyev Muhiddinning

6- laboratoriya ishi
6-varyant

6

using System;

namespace ConsoleApp

{
class Program
{
static void Main(string[] args)
{
int n = 10; // n ni o'zgartirib ketma-ketlik yig'indisini hisoblayishingiz mumkin

double sum = 0;

for (int k = 0; k <= n; k++)
{
double numerator = Math.Pow(-1, k);
double denominator = Factorial(2 * k);

double term = numerator / denominator;

sum += term;

}

Console.WriteLine("Birinchi {0} ta hadning yig'indisi: {1}", n, sum);

}

static double Factorial(int n)

{
double result = 1;
for (int i = 2; i <= n; i++)
{
result *= i;
}
return result;
}
}
}


7- laboratoriya ishi

6-varyant

1. 
   Satr berilgan. Abc harflari guruhi unga necha marta kiritilganligini aniqlang.
   

using System;
using System.Windows.Forms;

namespace StringExample

{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();

string myString = "abcabcaabcabcbbabc";

int count = 0;

int index = myString.IndexOf("abc");

while (index != -1)

{
count++;
index = myString.IndexOf("abc", index + 1);
}

string resultString = string.Format("Matnda 'abc' harflari guruhi {0} marta kiritilgan.", count);

TextBox textBox = new TextBox();

textBox.Multiline = true;
textBox.ReadOnly = true;
textBox.Text = resultString;

this.Controls.Add(textBox);

textBox.Dock = DockStyle.Fill;
}
}
}

2. 
   Matn rus tilida berilgan. Unda eng qisqa so'z necha marta uchrashini aniqlang.
   

using System;
using System.Linq;
using System.Windows.Forms;

namespace StringExample

{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();

string myString = "Это тестовая строка для проверки, что слово может появиться только один раз. Эта строка также содержит повторяющиеся слова, такие как слово и строка.";

// Matndan so'zlar ro'yxatini olib chiqamiz

string[] words = myString.Split(new char[] { ' ', ',', '.', '!', '?', ':', ';', '-' }, StringSplitOptions.RemoveEmptyEntries);

// So'zlar uzunligi bo'yicha saralab, eng qisqa so'zni olib chiqamiz

string shortestWord = words.OrderBy(word => word.Length).FirstOrDefault();

// Eng qisqa so'z uchun necha marta uchrashganligini hisoblaymiz

int count = words.Count(word => word == shortestWord);

// Natijani matn ko'rinishida chiqaramiz

string resultString = string.Format("Eng qisqa so'z: {0}\nUchrashganligi: {1}", shortestWord, count);

// Matnni ko'rsatish uchun TextBox yaratamiz va unga natijani o'tkazamiz

TextBox textBox = new TextBox();
textBox.Multiline = true;
textBox.ReadOnly = true;
textBox.Text = resultString;

// TextBoxni Formga qo'shamiz

this.Controls.Add(textBox);
textBox.Dock = DockStyle.Fill;
}
}
}

3. 
   a Å b shaklidagi arifmetik ifodalar uchraydigan matn berilgan, bu erda Å +, -, *, / belgilaridan biridir. Barcha arifmetik ifodalarni yozing va ularning qiymatlarini hisoblang.
   

using System;
using System.Windows.Forms;

namespace StringExample

{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();

string myString = "a*b+c/d-a";

double a = 2.5;

double b = 3.7;
double c = 1.2;
double d = 4.6;

double result = EvaluateExpression(myString, a, b, c, d);

string resultString = string.Format("{0} = {1}", myString, result);

TextBox textBox = new TextBox();

textBox.Multiline = true;
textBox.ReadOnly = true;
textBox.Text = resultString;

this.Controls.Add(textBox);

textBox.Dock = DockStyle.Fill;
}

static double EvaluateExpression(string expression, double a, double b, double c, double d)

{
// Å belgisini arifmetik amallar bilan almashtiramiz
expression = expression.Replace("Å", "+");
expression = expression.Replace("-", "+-");

// Matndan barcha arifmetik ifodalarni olib chiqamiz

string[] terms = expression.Split(new char[] { '+' });

double result = 0;

foreach (string term in terms)
{
// Arifmetik ifoda ichidagi o'zgaruvchilarni qiymatlariga o'zgartiramiz
string processedTerm = term.Replace("a", a.ToString());
processedTerm = processedTerm.Replace("b", b.ToString());
processedTerm = processedTerm.Replace("c", c.ToString());
processedTerm = processedTerm.Replace("d", d.ToString());

// O'zgaruvchilarga qiymatlar o'zgartirilgan ifodani hisoblaymiz

double termResult = EvaluateTerm(processedTerm);

// Jami natijani hisoblaymiz

result += termResult;
}

return result;

}

static double EvaluateTerm(string term)

{
// Matndagi ifodani hisoblaymiz
try
{
return Convert.ToDouble(term);
}
catch (FormatException)
{
// Matnda xatolik bo'lsa 0 qaytarib chiqamiz
return 0;
}
}
}
}