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- // See https://aka.ms/new-console-template for more information
- //Console.WriteLine("Hello, World!");
- // Zad 1.
- //Console.WriteLine("2011 to BIN {0}.", Convert.ToString(2093, 2));
- //Console.WriteLine("2011 to OCT {0}.", Convert.ToString(2093, 8));
- //Console.WriteLine("2011 to HEX {0}.", Convert.ToString(2093, 16));
- // Test 1 - 2 I
- //double x = 3.4, y = 5.6, z = 7.8;
- //Console.WriteLine(
- // ((Math.Pow(x, 7.0) * y * z) - 3.3 * Math.Abs(x + Math.Pow(y, 1/4.0))) /
- // Math.Pow(10.0, 7.0) + Math.Sqrt(Math.Log(4.0))
- //);
- // Zad 36 d
- //int x = 2;
- //int y = 3;
- //int z = 4;
- //Console.WriteLine(x > 0 && y > 0 && z > 0);
- // zad 102.
- //int a1, a2, a3, a4, a5, a6;
- //for (int number = 0; number <= 999999; number++)
- //{
- // a1 = (number / 100000);
- // a2 = (number / 10000) % 10;
- // a3 = ((number / 1000) % 10);
- // a4 = ((number / 100) % 10);
- // a5 = ((number / 10) % 10);
- // a6 = number % 10;
- // if (a1 + a2 + a3 == a4 + a5 + a6)
- // {
- // Console.WriteLine($"{number} is a lucky number");
- // }
- //}
- // zad 164
- //int[] A = {2, 2};
- //int[] B = {3, 4};
- //int[] C = {5, 6};
- //double a = Math.Sqrt(Math.Pow((B[0] - A[0]), 2) + Math.Pow((B[1] - A[1]), 2));
- //Console.WriteLine(a);
- //double b = Math.Sqrt(Math.Pow((C[0] - B[0]), 2) + Math.Pow((C[1] - B[1]), 2));
- //Console.WriteLine(b);
- //double c = Math.Sqrt(Math.Pow((C[0] - A[0]), 2) + Math.Pow((C[1] - A[1]), 2));
- //Console.WriteLine(c);
- //if (a + b > c && a + c > b && b + c > a)
- //{
- // Console.WriteLine("This is a triangle");
- // double s = (a + b + c) / 2;
- // double area = Math.Sqrt(s * (s - a) * (s - b) * (s - c));
- // Console.WriteLine($"The area is {area}");
- //}
- //else
- //{
- // Console.WriteLine("Thi si snot a triangle");
- //}
- // Zad 405
- int n = 0;
- bool isNumber = false;
- do
- {
- Console.Write("Please, enter the lenght of the array [2,25] ");
- n = int.Parse(Console.ReadLine());
- } while (n < 2 || n > 25);
- // isNumber = int.TryParse(Console.ReadLine(), out n);
- //} while (!isNumber || (n < 2 || n > 25));
- int[] myArray = new int[n];
- for (int i = 0; i < myArray.Length; i++)
- {
- Console.Write($"Please enter a value for element myArrey[{i}] = ");
- myArray[i] = int.Parse(Console.ReadLine());
- }
- for (int i = 0; i < myArray.Length; i++)
- {
- Console.WriteLine($"myArray[{i}] = {myArray[i]}");
- }
- int k = 0;
- Console.Write("Please, enter k = ");
- k = int.Parse(Console.ReadLine());
- Console.WriteLine(Prod(myArray, k));
- static int Prod(int[] myArray, int k)
- {
- int sum = 0;
- for (int i = 0; i < myArray.Length; i++)
- {
- if (myArray[i] > 0 && myArray[i] < k)
- {
- sum += myArray[i];
- }
- }
- return sum;
- }
- int counter = 0;
- int a1 = 0;
- int a2 = 0;
- int a3 = 0;
- for (int i = 0; i < myArray.Length; i++)
- {
- if (myArray[i] >= 100 && myArray[i] <= 666)
- {
- a1 = myArray[i] / 100;
- a2 = (myArray[i] / 10) % 10;
- a3 = myArray[i] % 10;
- //string numberString = myArray[i].ToString();
- //a1 = numberString[0];
- //a2 = numberString[1];
- //a3 = numberString[2];
- if ((a1 + a2 + a3) % 3 == 0)
- {
- counter++;
- }
- }
- }
- Console.WriteLine(counter);
- // Zad 363
- //Console.WriteLine(counter);
- //char myChar = 'A';
- //Console.WriteLine((int)myChar);
- //string unicode = "граа";
- //string result = unicode.Replace("г", "г");
- //Console.WriteLine(result);
- // ------------------------------------------
- //Console.WriteLine("2010 to BIN {0}.", Convert.ToString(2010, 2));
- //Console.WriteLine("2010 to OCT {0}.", Convert.ToString(2010, 8));
- //Console.WriteLine("2010 to HEX {0}.", Convert.ToString(2010, 16));
- double H = 2.3;
- double R = 5.0;
- Console.WriteLine("Surface s = {0}", 2 * Math.PI * R * H);
- Console.WriteLine("Full Surface S = {0}", 2 * Math.PI * R * H + 2 * Math.PI * Math.Pow(R, 2));
- // Zad 37 - 4
- bool s = false;
- bool t = true;
- Console.WriteLine(!(s || t) && s || !t);
- // Zad 99
- double sum = 0;
- for (int i = 1; i < 100000; i++)
- {
- if (i % 2 == 0)
- {
- sum -= 1.0/i;
- }
- else
- {
- sum += 1.0 / i;
- }
- }
- Console.WriteLine(sum);
- sum = 0;
- for (int i = 100000; i >= 1; i--)
- {
- if (i % 2 == 0)
- {
- sum -= 1.0 / i;
- }
- else
- {
- sum += 1.0 / i;
- }
- }
- Console.WriteLine(sum);
- double sumPositive = 0;
- double sumNegative = 0;
- for (int i = 1; i <= 100000; i++)
- {
- if (i % 2 == 0)
- {
- sumNegative -= 1.0 / i;
- }
- else
- {
- sumPositive += 1.0 / i;
- }
- }
- Console.WriteLine(sumNegative);
- Console.WriteLine(sumPositive);
- sumPositive = 0;
- sumNegative = 0;
- for (int i = 100000; i >= 1; i--)
- {
- if (i % 2 == 0)
- {
- sumNegative -= 1.0 / i;
- }
- else
- {
- sumPositive += 1.0 / i;
- }
- }
- Console.WriteLine(sumNegative);
- Console.WriteLine(sumPositive);
- // Zad 163 zad 90
- int a = 2;
- int b = 3;
- int c = 4;
- int d = 5;
- int p = 6;
- int q = -7;
- // Console.WriteLine(a * x + b * y + c * z + d = 0);
- for (int x = p; x < q; x++)
- {
- for (int y = p; y < q; y++)
- {
- for (int z = p; z < q; z++)
- {
- if (a*x + b*y + c*z + d == 0)
- {
- Console.WriteLine($"x = {x} y = {y} z = {z}");
- Console.ReadKey(true);
- }
- }
- }
- }
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