From 0ef864286cb3ac30c1479dd3bccc6cd5e2c329a0 Mon Sep 17 00:00:00 2001
From: Uwe Wienkop <uwe.wienkop@th-nuernberg.de>
Date: Mon, 22 Nov 2021 12:44:52 +0100
Subject: [PATCH] Mo 22.11. Mehrdimensionale Felder
---
08 2D_Felder/08 2D_Felder.csproj | 9 +++
08 2D_Felder/Program.cs | 127 +++++++++++++++++++++++++++++++
08 RefVsOut/08 RefVsOut.csproj | 9 +++
08 RefVsOut/Program.cs | 30 ++++++++
Prog1_WS2021_22.sln | 14 +++-
5 files changed, 188 insertions(+), 1 deletion(-)
create mode 100644 08 2D_Felder/08 2D_Felder.csproj
create mode 100644 08 2D_Felder/Program.cs
create mode 100644 08 RefVsOut/08 RefVsOut.csproj
create mode 100644 08 RefVsOut/Program.cs
diff --git a/08 2D_Felder/08 2D_Felder.csproj b/08 2D_Felder/08 2D_Felder.csproj
new file mode 100644
index 0000000..7636546
--- /dev/null
+++ b/08 2D_Felder/08 2D_Felder.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+ <PropertyGroup>
+ <OutputType>Exe</OutputType>
+ <TargetFramework>netcoreapp3.1</TargetFramework>
+ <RootNamespace>_08_2D_Felder</RootNamespace>
+ </PropertyGroup>
+
+</Project>
diff --git a/08 2D_Felder/Program.cs b/08 2D_Felder/Program.cs
new file mode 100644
index 0000000..02d1caa
--- /dev/null
+++ b/08 2D_Felder/Program.cs
@@ -0,0 +1,127 @@
+using System;
+
+namespace _08_2D_Felder
+{
+ class Program
+ {
+ static void FeldAusgeben(int[,] feld)
+ {
+ for (int z = 0; z < feld.GetLength(0); z++) // GetLength(n) ~ Anzahl der Elemente in der Dimension n
+ {
+ for (int i = 0; i < feld.GetLength(1); i++)
+ {
+ Console.Write($"{feld[z, i],3} ");
+ }
+ Console.WriteLine();
+ }
+ Console.WriteLine("-----------------------------");
+ }
+ static int[,] FeldKopieren(int[,] f1)
+ {
+ int[,] f2 = new int[f1.GetLength(0), f1.GetLength(1)];
+ for (int z = 0; z < f1.GetLength(0); z++) // GetLength(n) ~ Anzahl der Elemente in der Dimension n
+ for (int i = 0; i < f1.GetLength(1); i++)
+ f2[z,i] = f1[z, i];
+ return f2;
+ }
+ static void Main(string[] args)
+ {
+ int[] f1 = new int[10]; // int-Feld mit 10 Speicherplätzen
+ int[,] f2 = new int[3, 4]; // int-Feld mit 3 Zeilen zu je 4 Spalten
+ int[,,] f3 = new int[2, 3, 4]; // int-Feld mit 2 Ebenen mit jeweils 3 Zeilen zu je 4 Spalten
+
+ int[] g1 = { 1, 2, 3, 4, 5, 6 };
+ int[,] g2 = {
+ { 1,2,3},
+ { 4,5,6 }
+ };
+
+ for (int i = 0; i < g1.Length; i++) // Length ~ Anzahl der Elemente im Feld
+ {
+ Console.Write($"{g1[i]} ");
+ }
+ Console.WriteLine();
+ Console.WriteLine("--------------");
+
+ FeldAusgeben(g2);
+
+ int[,] h = new int[7, 18];
+ FeldAusgeben(h);
+
+ for (int z = 0; z < h.GetLength(0); z++)
+ {
+ for (int s = 0; s < h.GetLength(1); s++) // .GetLength(1) ~ Anzahl der Spalten
+ h[z, s] = (z+1)*100+s;
+ }
+ FeldAusgeben(h);
+
+
+ // Oberste Zeile mit 1 belegen:
+ for (int i = 0; i < h.GetLength(1); i++) // .GetLength(1) ~ Anzahl der Spalten
+ h[0, i] = 1;
+ FeldAusgeben(h);
+
+
+ // Unterste Zeile mit 4 belegen:
+ for (int i = 0; i < h.GetLength(1); i++) // .GetLength(1) ~ Anzahl der Spalten
+ h[h.GetLength(0)-1, i] = 4;
+ FeldAusgeben(h);
+
+ int[,] hh = FeldKopieren(h);
+
+ // Ganz linke Spalte mit 2 belegen:
+ for (int z = 1; z < h.GetLength(0)-1; z++) // .GetLength(0) ~ Anzahl der Zeilen
+ h[z, 0] = 2;
+ FeldAusgeben(h);
+
+
+ // Ganz rechte Spalte mit 3 belegen:
+ for (int z = 0; z < h.GetLength(0); z++) // .GetLength(0) ~ Anzahl der Zeilen
+ h[z, h.GetLength(1) - 1] = 3;
+ FeldAusgeben(h);
+
+
+ // Hauptdiagonale mit 5 belegen:
+ int min = Math.Min(h.GetLength(0), h.GetLength(1));
+ for (int i = 0; i < min; i++)
+ h[i, i] = 5;
+ FeldAusgeben(h);
+
+
+ ///////////////////////////////////////////////////////////////////////////
+ /// Ausgefranste Felder (Jagged Arrays)
+
+ int[][] k = new int[5][];
+ k[0] = new int[5];
+ k[1] = new int[1];
+ k[3] = new int[] { 4, 5, 6, 7, 8, 9, 3 };
+
+ for (int z = 0; z < k.Length; z++)
+ {
+ if (k[z] != null)
+ {
+ for (int i = 0; i < k[z].Length; i++)
+ {
+ Console.Write($"{k[z][i]} ");
+ }
+ Console.WriteLine();
+ }
+ else
+ {
+ Console.WriteLine("Null - Zeile");
+ }
+ }
+
+
+
+ /////////////////////////////////////////////////////////////////////
+ ///
+ int anz = 6;
+ bool[] bf = new bool[1000000];
+
+ for (int i = 0; i < bf.Length; i++)
+ bf[i] = true;
+
+ }
+ }
+}
diff --git a/08 RefVsOut/08 RefVsOut.csproj b/08 RefVsOut/08 RefVsOut.csproj
new file mode 100644
index 0000000..312070a
--- /dev/null
+++ b/08 RefVsOut/08 RefVsOut.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+ <PropertyGroup>
+ <OutputType>Exe</OutputType>
+ <TargetFramework>netcoreapp3.1</TargetFramework>
+ <RootNamespace>_08_RefVsOut</RootNamespace>
+ </PropertyGroup>
+
+</Project>
diff --git a/08 RefVsOut/Program.cs b/08 RefVsOut/Program.cs
new file mode 100644
index 0000000..cf989c0
--- /dev/null
+++ b/08 RefVsOut/Program.cs
@@ -0,0 +1,30 @@
+using System;
+
+namespace _08_RefVsOut
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ int x=3;
+ int y=5;
+ TueEtwas(ref x,out y);
+
+ LängeBreitengrad2XY(2, 3, out double a, out double b);
+ Console.WriteLine($"{a}, {b}");
+ }
+ static void LängeBreitengrad2XY(double laengengrad, double breitengrad, out double X, out double Y)
+ {
+ // :
+ X = 123;
+ Y = 456;
+ }
+ static void TueEtwas(ref int a, out int b)
+ {
+ int xx;
+ //xx = b * b;
+ xx = a * a;
+ b = 5;
+ }
+ }
+}
diff --git a/Prog1_WS2021_22.sln b/Prog1_WS2021_22.sln
index 186374f..a3378c6 100644
--- a/Prog1_WS2021_22.sln
+++ b/Prog1_WS2021_22.sln
@@ -55,7 +55,11 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "07 Array_Anwendungen", "07
EndProject
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "07 ArraysByRef", "07 ArraysByRef\07 ArraysByRef.csproj", "{20991EFE-5ABF-4176-B115-8430D4487392}"
EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "07 DoubleUngenauigkeiten", "07 DoubleUngenauigkeiten\07 DoubleUngenauigkeiten.csproj", "{982D3EE4-33F6-48B9-8E8A-68DCCDFA3A84}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "07 DoubleUngenauigkeiten", "07 DoubleUngenauigkeiten\07 DoubleUngenauigkeiten.csproj", "{982D3EE4-33F6-48B9-8E8A-68DCCDFA3A84}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "08 RefVsOut", "08 RefVsOut\08 RefVsOut.csproj", "{4724CACD-310A-4F71-B140-400D77C92EC7}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "08 2D_Felder", "08 2D_Felder\08 2D_Felder.csproj", "{EE89CDF4-D279-4F6D-82E0-26175D60DF5D}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -171,6 +175,14 @@ Global
{982D3EE4-33F6-48B9-8E8A-68DCCDFA3A84}.Debug|Any CPU.Build.0 = Debug|Any CPU
{982D3EE4-33F6-48B9-8E8A-68DCCDFA3A84}.Release|Any CPU.ActiveCfg = Release|Any CPU
{982D3EE4-33F6-48B9-8E8A-68DCCDFA3A84}.Release|Any CPU.Build.0 = Release|Any CPU
+ {4724CACD-310A-4F71-B140-400D77C92EC7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {4724CACD-310A-4F71-B140-400D77C92EC7}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {4724CACD-310A-4F71-B140-400D77C92EC7}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {4724CACD-310A-4F71-B140-400D77C92EC7}.Release|Any CPU.Build.0 = Release|Any CPU
+ {EE89CDF4-D279-4F6D-82E0-26175D60DF5D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {EE89CDF4-D279-4F6D-82E0-26175D60DF5D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {EE89CDF4-D279-4F6D-82E0-26175D60DF5D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {EE89CDF4-D279-4F6D-82E0-26175D60DF5D}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
--
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