正则匹配连续三个数字
public class monkeycode {public static void main(String[] args) {String reg = "(?:0(?=1)|1(?=2)|2(?=3)|3(?=4)|4(?=5)|5(?=6)|6(?=7)|7(?=8)|8(?=9)|9(?=0))+\\d";String str = "123465478912312311112220";Matcher m = Pattern.compile(reg).matcher(str);while(m.find()){if(m.group().length()>=3){str = str.replace(m.group().substring(0,3), "");}}String r2 = "([1]{3}|[2]{3}|[3]{2}|[4]{3}|[5]{3}|[6]{3}|[7]{3}|[8]{3}|[9]{3}|[0]{3})";System.out.println(str.replaceAll(r2, ""));}}