From 745bcc0f39e0b3da136eb40fefd8e35e7fcd51a4 Mon Sep 17 00:00:00 2001
From: Uwe Wienkop <uwe.wienkop@th-nuernberg.de>
Date: Tue, 30 Nov 2021 11:23:31 +0100
Subject: [PATCH] 2021-11-30 Abschluss String-Operationen
---
09 CaesarCodierung/09 CaesarCodierung.csproj | 9 +++
09 CaesarCodierung/Program.cs | 41 ++++++++++
.../09 StringOperationen.csproj | 9 +++
09 StringOperationen/Program.cs | 58 ++++++++++++++
09 StringSplit/09 StringSplit.csproj | 9 +++
09 StringSplit/Program.cs | 80 +++++++++++++++++++
Prog1_WS2021_22.sln | 30 +++++--
7 files changed, 230 insertions(+), 6 deletions(-)
create mode 100644 09 CaesarCodierung/09 CaesarCodierung.csproj
create mode 100644 09 CaesarCodierung/Program.cs
create mode 100644 09 StringOperationen/09 StringOperationen.csproj
create mode 100644 09 StringOperationen/Program.cs
create mode 100644 09 StringSplit/09 StringSplit.csproj
create mode 100644 09 StringSplit/Program.cs
diff --git a/09 CaesarCodierung/09 CaesarCodierung.csproj b/09 CaesarCodierung/09 CaesarCodierung.csproj
new file mode 100644
index 0000000..2e7e888
--- /dev/null
+++ b/09 CaesarCodierung/09 CaesarCodierung.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+ <PropertyGroup>
+ <OutputType>Exe</OutputType>
+ <TargetFramework>netcoreapp3.1</TargetFramework>
+ <RootNamespace>_09_CaesarCodierung</RootNamespace>
+ </PropertyGroup>
+
+</Project>
diff --git a/09 CaesarCodierung/Program.cs b/09 CaesarCodierung/Program.cs
new file mode 100644
index 0000000..628c966
--- /dev/null
+++ b/09 CaesarCodierung/Program.cs
@@ -0,0 +1,41 @@
+using System;
+
+namespace _09_CaesarCodierung
+{
+ class Program
+ {
+ static string CaesarCodierung(string s, int shift)
+ {
+ string erg = "";
+
+ foreach (char c in s)
+ {
+ int codiert = c + shift;
+
+ if (codiert > 'Z') // rechts hinausgelaufen
+ codiert -= 26;
+ else if (codiert < 'A') // links hinausgelaufen
+ codiert += 26;
+ erg += (char)codiert;
+ }
+
+ return erg;
+ }
+ static void Main(string[] args)
+ {
+ // Shift=1: ABCZ --> BCDA
+ // Shift=2: ABCZ --> CDEB
+ // Shift=-1: ABCZ --> ZABY
+
+ //Console.WriteLine(CaesarCodierung("ABCZ", 1));
+ //Console.WriteLine(CaesarCodierung("ABCZ", 2));
+ //Console.WriteLine(CaesarCodierung("ABCZ", -1));
+
+ Random wuerfel = new Random();
+ string geheim = CaesarCodierung("HELLOWORLD", wuerfel.Next(1, 25));
+
+ for (int i = -1; i > -26; i--)
+ Console.WriteLine(CaesarCodierung(geheim, i));
+ }
+ }
+}
diff --git a/09 StringOperationen/09 StringOperationen.csproj b/09 StringOperationen/09 StringOperationen.csproj
new file mode 100644
index 0000000..3627b2c
--- /dev/null
+++ b/09 StringOperationen/09 StringOperationen.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+ <PropertyGroup>
+ <OutputType>Exe</OutputType>
+ <TargetFramework>netcoreapp3.1</TargetFramework>
+ <RootNamespace>_09_StringOperationen</RootNamespace>
+ </PropertyGroup>
+
+</Project>
diff --git a/09 StringOperationen/Program.cs b/09 StringOperationen/Program.cs
new file mode 100644
index 0000000..2c7a736
--- /dev/null
+++ b/09 StringOperationen/Program.cs
@@ -0,0 +1,58 @@
+using System;
+using System.Text;
+
+namespace _09_StringOperationen
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ string s = "Hello World!";
+ // s[1] = 'E'; // NICHT ERLAUBT! Strings sind read-only!!!
+
+ string s1 = s.Substring(6); // --> "World!"
+ string s2 = s.Substring(1, 4); // --> "ello"
+
+ s.Contains("World"); // --> true
+ s.StartsWith("Hello"); // --> true
+
+ s.Split(' '); // --> string[] {"Hello", "World!"}
+
+ s.ToLower(); // --> "hello world!"
+ s.ToUpper(); // --> "HELLO WORLD!"
+
+ s.IndexOf("World"); // --> 6 || -1 bei nicht-Vorkommen
+ s.IndexOf("o", 6); // --> 7
+
+ string s3 = "";
+ for (char letter = 'A'; letter <= 'Z'; letter++)
+ {
+ // Console.WriteLine(letter);
+ s3 += letter; // "" + 'A' --> "A" + 'B' --> "AB" --> ...
+ }
+ Console.WriteLine(s3);
+
+ DateTime t0 = DateTime.Now;
+ string s4 = "";
+ for (int i=0; i<200000; i++)
+ s4 += ".";
+ DateTime t1 = DateTime.Now;
+ Console.WriteLine($"Rechenzeit: {(t1-t0).TotalMilliseconds}ms");
+
+ // s4 = "" Speicheranforderung 0 Zeichen
+ // s4 = "" + "." Speicheranforderung für 1 Zeichen; Umkopieren von "" und "."
+ // s4 = "." + "." Speicheranforderung für 2 Zeichen; Umkopieren von "." und "."
+ // s4 = ".." + "." Speicheranforderung für 3 Zeichen; Umkopieren von ".." und "."
+
+
+
+ StringBuilder sb = new StringBuilder(200000);
+ for (int i = 0; i < 200000; i++)
+ sb.Append( ".");
+ s4 = sb.ToString();
+ DateTime t2 = DateTime.Now;
+ Console.WriteLine($"Rechenzeit: {(t2 - t1).TotalMilliseconds}ms");
+ Console.WriteLine(s4);
+ }
+ }
+}
diff --git a/09 StringSplit/09 StringSplit.csproj b/09 StringSplit/09 StringSplit.csproj
new file mode 100644
index 0000000..f10ccdf
--- /dev/null
+++ b/09 StringSplit/09 StringSplit.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+ <PropertyGroup>
+ <OutputType>Exe</OutputType>
+ <TargetFramework>netcoreapp3.1</TargetFramework>
+ <RootNamespace>_09_StringSplit</RootNamespace>
+ </PropertyGroup>
+
+</Project>
diff --git a/09 StringSplit/Program.cs b/09 StringSplit/Program.cs
new file mode 100644
index 0000000..18bf58c
--- /dev/null
+++ b/09 StringSplit/Program.cs
@@ -0,0 +1,80 @@
+using System;
+using System.Collections.Generic;
+
+namespace _09_StringSplit
+{
+ class Program
+ {
+ static bool IsLetter(char c)
+ {
+ return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z');
+ }
+ static string[] StringSplit(string s)
+ {
+ List<string> erg = new List<string>();
+ int i = 0;
+ int anfWortInd;
+
+ while (i < s.Length)
+ {
+ // 1. Solange String-Ende noch nicht erreicht: Etwaige Nicht-Buchstaben überspringen
+ while (i < s.Length && !IsLetter(s[i])) // ! ~ NOT
+ i++;
+
+ // 2a. Wortanfangsposition merken
+ anfWortInd = i;
+
+
+ if (i < s.Length)
+ {
+ // 2b. Buchstaben des Worts durchlaufen bis entweder
+ // - String-Ende erreicht oder
+ // - Erstes Nicht-Buchstabenzeichen gefunden
+ while (i < s.Length && IsLetter(s[i]))
+ i++;
+ // 2c. Wortende minus Wortanfang = Wortlänge
+ // 3. Wort per SubString() entnehmen und der Liste hinzufügen
+ erg.Add(s.Substring(anfWortInd, i - anfWortInd));
+ }
+ }
+ return erg.ToArray(); // s.Split(new char[] { ' ', '!' },StringSplitOptions.RemoveEmptyEntries);
+ }
+
+ static void StringSplitTest(string s)
+ {
+ Console.WriteLine($"Gegeben: |{s}|");
+ string[] sf = StringSplit(s);
+ foreach (string s1 in sf)
+ {
+ Console.WriteLine($" |{s1}|");
+ }
+ Console.WriteLine("-------------");
+ }
+ static void Main(string[] args)
+ {
+ //string s = " Dies ist ein Beispieltext!";
+ //Console.WriteLine(s);
+ //Console.WriteLine(s.Substring(2));
+ //Console.WriteLine(s.Substring(2,4));
+
+ StringSplitTest("Dies ist ein Beispieltext!");
+ StringSplitTest(" Dies ist ein Beispieltext!");
+ StringSplitTest("Dies ist ein Beispieltext");
+ StringSplitTest("");
+ StringSplitTest(" ");
+
+
+
+ //List<string> freunde = new List<string>();
+ //freunde.Add("Anton");
+ //freunde.Add("Berta");
+ //freunde.Add("Claudia");
+
+ //foreach (string freund in freunde)
+ //{
+ // Console.WriteLine(freund);
+ //}
+ //string[] sf = freunde.ToArray();
+ }
+ }
+}
diff --git a/Prog1_WS2021_22.sln b/Prog1_WS2021_22.sln
index 034930f..a843ddd 100644
--- a/Prog1_WS2021_22.sln
+++ b/Prog1_WS2021_22.sln
@@ -65,17 +65,23 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "08 2D_Felder_Ubg_Di", "08 2
EndProject
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "08 ZeichenkettenIntro", "08 ZeichenkettenIntro\08 ZeichenkettenIntro.csproj", "{36213D4C-1100-4634-A883-1BC46FD24298}"
EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "09 Palindrom_Easy", "09 Palindrom_Easy\09 Palindrom_Easy.csproj", "{BD349A0C-121D-4705-8235-027626A20A11}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "09 Palindrom_Easy", "09 Palindrom_Easy\09 Palindrom_Easy.csproj", "{BD349A0C-121D-4705-8235-027626A20A11}"
EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "09 PalindromFinal", "09 PalindromFinal\09 PalindromFinal.csproj", "{91016469-B34B-42B3-A4B7-7872847C8984}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "09 PalindromFinal", "09 PalindromFinal\09 PalindromFinal.csproj", "{91016469-B34B-42B3-A4B7-7872847C8984}"
EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "09 PalindromFinalTest", "09 PalindromFinalTest\09 PalindromFinalTest.csproj", "{4A14022F-4D0C-40FA-9ED3-46C77CE89308}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "09 PalindromFinalTest", "09 PalindromFinalTest\09 PalindromFinalTest.csproj", "{4A14022F-4D0C-40FA-9ED3-46C77CE89308}"
EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "09 CompareTo", "09 CompareTo\09 CompareTo.csproj", "{69FD48D6-46D0-494F-9AE6-54C6280D3C8D}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "09 CompareTo", "09 CompareTo\09 CompareTo.csproj", "{69FD48D6-46D0-494F-9AE6-54C6280D3C8D}"
EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "09 Histogramm", "09 Histogramm\09 Histogramm.csproj", "{9AC7E71B-8FC3-48CC-9963-B18CAC1D4413}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "09 Histogramm", "09 Histogramm\09 Histogramm.csproj", "{9AC7E71B-8FC3-48CC-9963-B18CAC1D4413}"
EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "09 Contains_UebgMo", "09 Contains_UebgMo\09 Contains_UebgMo.csproj", "{560601CF-F420-4B9E-85A4-553236DA123A}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "09 Contains_UebgMo", "09 Contains_UebgMo\09 Contains_UebgMo.csproj", "{560601CF-F420-4B9E-85A4-553236DA123A}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "09 StringSplit", "09 StringSplit\09 StringSplit.csproj", "{E832992A-9736-400D-B1DD-7C76C1975210}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "09 StringOperationen", "09 StringOperationen\09 StringOperationen.csproj", "{C8566764-6360-4E7D-B570-06BD184252FC}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "09 CaesarCodierung", "09 CaesarCodierung\09 CaesarCodierung.csproj", "{663C2A15-A65A-4520-9125-A891A1D8CC4D}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -231,6 +237,18 @@ Global
{560601CF-F420-4B9E-85A4-553236DA123A}.Debug|Any CPU.Build.0 = Debug|Any CPU
{560601CF-F420-4B9E-85A4-553236DA123A}.Release|Any CPU.ActiveCfg = Release|Any CPU
{560601CF-F420-4B9E-85A4-553236DA123A}.Release|Any CPU.Build.0 = Release|Any CPU
+ {E832992A-9736-400D-B1DD-7C76C1975210}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {E832992A-9736-400D-B1DD-7C76C1975210}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {E832992A-9736-400D-B1DD-7C76C1975210}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {E832992A-9736-400D-B1DD-7C76C1975210}.Release|Any CPU.Build.0 = Release|Any CPU
+ {C8566764-6360-4E7D-B570-06BD184252FC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {C8566764-6360-4E7D-B570-06BD184252FC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {C8566764-6360-4E7D-B570-06BD184252FC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {C8566764-6360-4E7D-B570-06BD184252FC}.Release|Any CPU.Build.0 = Release|Any CPU
+ {663C2A15-A65A-4520-9125-A891A1D8CC4D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {663C2A15-A65A-4520-9125-A891A1D8CC4D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {663C2A15-A65A-4520-9125-A891A1D8CC4D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {663C2A15-A65A-4520-9125-A891A1D8CC4D}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
--
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