我的印度软件老师,给的几个C# PROGRAMS (2)

不念不忘少年蓝@ 2022-08-24 11:41 207阅读 0赞

using System;  
using System.Text.RegularExpressions;

namespace Wrox.ProCSharp.RegularExpressionPlayaround  
\{  
class MainEntryPoint  
\{  
static void Main()  
\{  
Find1();  
Console.ReadLine();  
\}

static void Find1()  
\{  
string text = @"XML has made a major impact in almost every aspect of  
software development. Designed as an open, extensible, self-describing  
language, it has become the standard for data and document delivery on  
the web. The panoply of XML-related technologies continues to develop  
at breakneck speed, to enable validation, navigation, transformation,  
linking, querying, description, and messaging of data.";  
string pattern = @"/bn/S\*ion/b";  
MatchCollection matches = Regex.Matches(text, pattern,  
RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace |  
RegexOptions.ExplicitCapture);  
WriteMatches(text, matches);  
\}

static void Find2()  
\{  
string text = @"XML has made a major impact in almost every aspect of  
software development. Designed as an open, extensible, self-describing  
language, it has become the standard for data and document delivery on  
the web. The panoply of XML-related technologies continues to develop  
at breakneck speed, to enable validation, navigation, transformation,  
linking, querying, description, and messaging of data.";  
string pattern = @"/bn";  
MatchCollection matches = Regex.Matches(text, pattern,  
RegexOptions.IgnoreCase);  
WriteMatches(text, matches);  
\}

static void WriteMatches(string text, MatchCollection matches)  
\{  
Console.WriteLine("Original text was: /n/n" + text + "/n");  
Console.WriteLine("No. of matches: " + matches.Count);  
foreach (Match nextMatch in matches)  
\{  
int Index = nextMatch.Index;  
string result = nextMatch.ToString();  
int charsBefore = (Index < 5) ? Index : 5;  
int fromEnd = text.Length - Index - result.Length;  
int charsAfter = (fromEnd < 5) ? fromEnd : 5;  
int charsToDisplay = charsBefore + charsAfter + result.Length;

Console.WriteLine("Index: \{0\}, /tString: \{1\}, /t\{2\}",  
Index, result,  
text.Substring(Index - charsBefore, charsToDisplay));

\}  
\}  
\}  
\}

using System;  
using System.Text;

namespace Wrox.ProCSharp.StringEncoder  
\{  
class MainEntryPoint  
\{  
static void Main(string\[\] args)  
\{  
string greetingText = "Hello from all the guys at Wrox Press. ";  
greetingText += "We do hope you enjoy this book as much as we enjoyed writing it.";

for(int i = (int)'z'; i>=(int)'a' ; i--)  
\{  
char Old = (char)i;  
char New = (char)(i+1);  
greetingText = greetingText.Replace(Old, New);  
\}

for(int i = (int)'Z'; i>=(int)'A' ; i--)  
\{  
char Old = (char)i;  
char New = (char)(i+1);  
greetingText = greetingText.Replace(Old, New);  
\}  
Console.WriteLine("Encoded:/n" + greetingText);

StringBuilder greetingBuilder =  
new StringBuilder("Hello from all the guys at Wrox Press. ", 150);  
greetingBuilder.Append("We do hope you enjoy this book as much as we enjoyed writing it");

for(int i = (int)'z'; i>=(int)'a' ; i--)  
\{  
char Old = (char)i;  
char New = (char)(i+1);  
greetingBuilder = greetingBuilder.Replace(Old, New);  
\}

for(int i = (int)'Z'; i>=(int)'A' ; i--)  
\{  
char Old = (char)i;  
char New = (char)(i+1);  
greetingBuilder = greetingBuilder.Replace(Old, New);  
\}  
Console.WriteLine("Encoded:/n" + greetingBuilder.ToString());  
  
\}  
\}  
\}