java数字字符的全半角转化

Posted 2021-03-22 玄空2

package test;

public class Test014 {
public static void main(String[] args) {

//translation("abc111ａｂｃ１１１１");
translation2("123445１１１１");

}

public static void translation(String ss) {

//代表0-255的ascii码表值
String regex = "[\x00-\xff]";
char[] cr = ss.toCharArray();
for (char c : cr) {
if (String.valueOf(c).matches(regex)) {
System.out.println("半角转全角为:" + (char) (c + 65248));
} else {
System.out.println("全角转半角:" + (char) (c - 65248));
}
}
}

public static void translation2(String ss) {
char[] half_angle = { ‘0‘, ‘1‘, ‘2‘, ‘3‘, ‘4‘, ‘5‘, ‘6‘, ‘7‘, ‘8‘, ‘9‘ };
char[] full_angle = { ‘０‘, ‘１‘, ‘２‘, ‘３‘, ‘４‘, ‘５‘, ‘６‘, ‘７‘, ‘８‘, ‘９‘ };
char firstAngle=‘0‘;
char lastAngle=‘9‘;

//字符长度超过10位时用这个
// for(int i=0;i<half_angle.length;i++) {
// ss=ss.replaceAll(String.valueOf(half_angle[i]),String.valueOf(full_angle[i]));
// System.out.println(ss);
// }
String temp="";

for(int i=0;i<ss.length();i++) {
if(ss.charAt(i)>=firstAngle&&ss.charAt(i)<=lastAngle) {
temp+=full_angle[ss.charAt(i)-firstAngle];
}
else {
temp+=ss.charAt(i);
}
}
System.out.println(temp);
}

}