使用正则表达式，如何在Java中查找比字符串大2位的数字

Question

I have a string at most 1000 length, in the string every two digits represent a number, how can I find if the string contains a number that is great than my input number?

eg 000102252500 represents numbers 00, 01, 02, 25, 25, 00, if I have an input number at 20(this number can be changed), how can I find if the string contains a number great than 20 using regular expression?

Thanks!

Answer 1

With this regular expression you should match it but you must generate a regular expression to match all 2 digit numbers bigger than the input number in this case 20 which is inside the middle parenthesis. (2[1-9])|([3-9][0-9]) //This matches any number from 21 to 99

    ^(\d\d)*((2[1-9])|([3-9][0-9]))(\d\d)*$