Question

急求：正则表达式 0.01到99.99之间的数字

正确数字：0.01 1 1.00 99 99.9 99.99 1.0

错误数字：0 0.0 0.00 0. 5.

Answer 1

[^0]\d?$|[^0]\d?.\d{1,2}$|0.0?[^0]$

校验结果如下：

public class PatternDemo
{

public static void main(String[] args)
{
String rule = "[^0]\\d?$|[^0]\\d?.\\d{1,2}$|0.0?[^0]$";
PatternDemo demo = new PatternDemo();
System.out.println(demo.match(rule, "0.01"));//true
System.out.println(demo.match(rule, "1"));//true
System.out.println(demo.match(rule, "1.00"));//true
System.out.println(demo.match(rule, "99"));//true
System.out.println(demo.match(rule, "99.9"));//true
System.out.println(demo.match(rule, "90.9"));//true
System.out.println(demo.match(rule, "99.99"));//true
System.out.println(demo.match(rule, "0"));//false
System.out.println(demo.match(rule, "0.0"));//false
System.out.println(demo.match(rule, "0.00"));//false
System.out.println(demo.match(rule, "0."));//false
System.out.println(demo.match(rule, "5."));//false

}

public boolean match(String rule,String src)
{

Pattern pattern = Pattern
.compile(rule);
Matcher matcher = pattern.matcher(src);
return matcher.matches();
}
}

Answer 2

(?!^0[.]0$)(?!0[.]00)(?!^0$)[0-9]{1,2}([.][0-9]{1,2})?

Answer 3

x<0.01
x>99.99