正则表达式

    //7连以上
    private static Pattern pattern1 = Pattern.compile("([\\d])\\1{6,}");
    //aaabbbccc
    private static Pattern pattern2 = Pattern.compile("([\\d])\\1{2}([\\d])\\2{2}([\\d])\\3{2}");

    //连续6位以上递增
    private static Pattern pattern3 = Pattern.compile("(?:0(?=1)|1(?=2)|2(?=3)|3(?=4)|4(?=5)|5(?=6)|6(?=7)|7(?=8)|8(?=9)){5,}\\d");

    //连续6位以上递减
    private static Pattern pattern4 = Pattern.compile("(?:9(?=8)|8(?=7)|7(?=6)|6(?=5)|5(?=4)|4(?=3)|3(?=2)|2(?=1)|1(?=0)){5,}\\d");

    //abc abc abc
    private static Pattern pattern5 = Pattern.compile("(\\d{3})\\1{2}");

    //ab ab ab ab
    private static Pattern pattern6 = Pattern.compile("(\\d{2})\\1{3}");

    //aa bb cc dd
    private static Pattern pattern7 = Pattern.compile("([\\d])\\1([\\d])\\2([\\d])\\3([\\d])\\4");

(\d{2,4})\1{3,}

解释：

2~4位数字，重复4次以上，如下会被命中：

abababab， abcabcabcabc