字符类 p{javaMirrored} Java 正则表达式。
javaobject oriented programmingprogramming更新于 2025/2/8 22:36:17
此字符类 \p{javaMirrored} 匹配大写字母。此类匹配字符，当作为参数传递给 java.lang.Character 类的 isMirrored() 方法时，该字符将返回 true。
示例 1
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegexExample {
public static void main(String args[]) {
//从用户读取字符串
System.out.println("输入字符串");
Scanner sc = new Scanner(System.in);
String input = sc.nextLine();
//正则表达式
String regex = "[\p{javaMirrored}]";
//编译正则表达式
Pattern pattern = Pattern.compile(regex);
//检索匹配器对象
Matcher matcher = pattern.matcher(input);
int count = 0;
while(matcher.find()) {
count++;
}
System.out.println("Number of mirrored characters: "+count);
}
}
输出
Enter a string
<hello< (how are you) {welcome}
Number of mirrored characters: 6
示例 2
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String args[]) {
//匹配小写字母的正则表达式
String regex = "^\p{javaMirrored}+$";
//获取输入数据
Scanner sc = new Scanner(System.in);
System.out.println("Enter 5 input strings: ");
String input[] = new String[5];
for (int i=0; i<5; i++) {
input[i] = sc.nextLine();
}
//创建一个 Pattern 对象
Pattern p = Pattern.compile(regex);
System.out.println("Strings with mirrored characters: ");
for(int i=0; i<5;i++) {
//Creating a Matcher object
Matcher m = p.matcher(input[i]);
if(m.matches()) {
System.out.println(m.group());
}
}
}
}
输出
Enter 5 input strings:
{Raju}
<RAMU>
rahman
radha
{}<>()[]
Strings with mirrored characters:
{}<>()[]
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