201 lines
5.3 KiB
C#
201 lines
5.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace ConsoleApp1
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{
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class Program
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{
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public static class GlobalData
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{
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public static int[] szamok = new int[100];
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public static int[] kisebb250 = { };
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}
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static void Feladat1()
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{
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Random random = new Random();
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for (int i = 0; i < GlobalData.szamok.Length; i++)
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{
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GlobalData.szamok[i] = random.Next(100, 500);
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}
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}
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static void Feladat2()
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{
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int sum = 0;
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foreach (int n in GlobalData.szamok)
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{
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sum += n;
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}
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Console.WriteLine(sum);
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}
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static void Feladat3()
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{
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bool van100 = false;
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foreach (int n in GlobalData.szamok)
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{
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if (n == 100)
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{
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van100 = true;
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break;
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}
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}
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if (van100)
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{
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Console.WriteLine("Van 100 a listában.");
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} else
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{
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Console.WriteLine("Nincs 100 a listában.");
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}
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}
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static void Feladat4()
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{
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int max = GlobalData.szamok[0];
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foreach (int n in GlobalData.szamok)
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{
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if (n > max)
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{
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max = n;
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}
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}
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Console.WriteLine($"A legnagyobb szám: {max}");
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}
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static void Feladat5()
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{
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int min = GlobalData.szamok[0];
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foreach (int n in GlobalData.szamok)
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{
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if (n < min)
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{
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min = n;
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}
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}
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Console.WriteLine($"A legkisebb szám: {min}");
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}
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static void Feladat6()
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{
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foreach (int n in GlobalData.szamok)
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{
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if (n < 250)
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{
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GlobalData.kisebb250 = GlobalData.kisebb250.Append(n).ToArray();
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}
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}
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}
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static void Feladat7(int keresendo)
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{
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int index = 0;
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for (int i = 0; i < GlobalData.kisebb250.Length; i++)
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{
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if(GlobalData.kisebb250[i] == keresendo)
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{
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index = i;
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break;
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}
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index = -1;
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}
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if (index == -1)
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{
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Console.WriteLine("Nincs ilyen elem.");
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} else
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{
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Console.WriteLine($"Az elem indexe: {index}");
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}
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}
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static void Feladat8()
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{
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for (int j = 0; j < GlobalData.kisebb250.Length; j++)
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{
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for (int g = 0; g < GlobalData.kisebb250.Length; g++)
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{
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if (GlobalData.kisebb250[j] < GlobalData.kisebb250[g])
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{
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int seged = GlobalData.kisebb250[j];
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GlobalData.kisebb250[j] = GlobalData.kisebb250[g];
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GlobalData.kisebb250[g] = seged;
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}
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}
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}
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foreach (int n in GlobalData.kisebb250)
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{
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Console.WriteLine(n);
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}
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}
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static void Feladat9()
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{
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int lngt = GlobalData.szamok.Length;
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for (int j = 0; j < lngt; j++)
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{
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for (int g = 0; g < (lngt - 1); g++)
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{
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if (GlobalData.szamok[g] > GlobalData.szamok[g + 1])
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{
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int seged = GlobalData.szamok[g + 1];
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GlobalData.szamok[g + 1] = GlobalData.szamok[g];
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GlobalData.szamok[g] = seged;
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}
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}
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}
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foreach (int n in GlobalData.szamok)
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{
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Console.WriteLine(n);
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}
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}
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static void Feladat10(int keresendo)
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{
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Console.WriteLine(Array.BinarySearch(GlobalData.szamok, keresendo));
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}
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static void Feladat11(int keresendo)
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{
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Console.WriteLine(Array.BinarySearch(GlobalData.szamok, keresendo));
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int i = GlobalData.szamok.Length / 2;
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int megold = -1;
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int ciklus = 2;
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while (megold == -1)
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{
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if (GlobalData.szamok[i] > keresendo)
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{
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int num = Convert.ToInt32(Math.Pow(2, ciklus));
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i += GlobalData.szamok.Length / (num);
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} else
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{
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int num = Convert.ToInt32(Math.Pow(2, ciklus));
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i -= GlobalData.szamok.Length / (num);
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}
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}
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}
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static void Main(string[] args)
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{
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Feladat1();
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Feladat2();
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Feladat3();
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Feladat4();
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Feladat5();
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Feladat6();
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Feladat7(150);
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Feladat8();
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Feladat9();
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Feladat10(150);
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Feladat11(150);
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Console.ReadLine();
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}
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}
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}
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