标签：imp tps util print ringbuf end tac pen append
import java.util.Arrays;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Test {
public static void main(String[] args) {
String s = "123-4567-89";
Pattern r = Pattern.compile("\\d{3}-(\\d{4})-\\d{2}");
Matcher m = r.matcher(s);
if (m.find())
for (int i = 0; i <= m.groupCount(); i++)
System.out.printf("group %d : %s\n", i, m.group(i));
// https://stackoverflow.com/questions/19737653/what-is-the-equivalent-of-regex-replace-with-function-evaluation-in-java-7
r = Pattern.compile("\\d+");
m = r.matcher(s);
StringBuffer sb = new StringBuffer();
while (m.find()) {
m.appendReplacement(sb, new StringBuffer(m.group(0)).reverse().toString());
}
m.appendTail(sb);
System.out.println(sb.toString());
r = Pattern.compile("%(begin|next|end)%");
s = "%begin%hello%next%world%end%";
System.out.println(Arrays.asList(r.split(s)));
}
}
/*
group 0 : 123-4567-89
group 1 : 4567
321-7654-98
[, hello, world]
*/using System;
using System.Text.RegularExpressions;
namespace Sample
{
class Test
{
public static void Main(string[] args)
{
var r = new Regex(@"\d{3}-(\d{4})-\d{2}");
var s = "123-4567-89";
var m = r.Match(s);
foreach (Group g in m.Groups)
Console.WriteLine($"group {g.Index} : {g.Value}");
r = new Regex(@"\d+");
s = r.Replace(s, m2 => {
var arr = m2.Groups[0].Value.ToCharArray();
Array.Reverse(arr);
return new string(arr);
});
Console.WriteLine(s);
r = new Regex("%(?:begin|next|end)%");
s = "%begin%hello%next%world%end%";
foreach (var s2 in r.Split(s))
Console.WriteLine(s2);
}
}
}
/*
group 0 : 123-4567-89
group 4 : 4567
321-7654-98
hello
world
*/标签：imp tps util print ringbuf end tac pen append
原文地址：http://www.cnblogs.com/zwvista/p/7899250.html
