利用正则表达式来反转一句话,以单词为单位

public static int Main(string[] args)

{

Console.WriteLine("============================");

string s = "i'm a student,my name is yuhong!ok!!!";

string[] sArray = System.Text.RegularExpressions.Regex.Split(s, @"[^\w]+", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

//记录标点符号

string[] sArray2 = System.Text.RegularExpressions.Regex.Split(s, @"[\w]+",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

int start = 0;

int end = sArray.Length - 1;

while (start<end)

{

string tmp = sArray[start];

sArray[start] = sArray[end];

sArray[end] =tmp;

start++;

end--;

}

start = 0;

end = sArray2.Length - 1;

while (start < end)

{

string tmp = sArray2[start];

sArray2[start] = sArray2[end];

sArray2[end] = tmp;

start++;

end--;

}

// s=string.Join(" ", sArray);

string result = "";

for (int i2 = 0; i2 < sArray.Length; i2++)

{

result += sArray[i2] + sArray2[i2];

}

s = result;

Console.WriteLine(s);

//Console.WriteLine("============================");

//string str1 = "我**是*****一*****个*************教*****师";

//string[] str2 = System.Text.RegularExpressions.Regex.Split(str1, @"[*]+");

//foreach (string iss in str2)

// Console.WriteLine(iss.ToString());

return 0;

}

http://www.cnblogs.com/meiwn/archive/2006/10/19/533587.html