我的印度软件老师,给的 几个C# PROGRAMS (2)
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());
}
}
}