JAVA工具类匹配重复或者连续的字符和符号

import java.util.ArrayList;
import java.util.List;
 
public class StringChecker {
    static String SYMBOLS = "~!@#$%^&*()_+{}|<>?,./";
    static List symbolSubstrings = splitStringIntoSubstrings(SYMBOLS, 3);
 
    /**
     * 检查字符串是否包含重复或递增的字符
     *
     * @param str 要检查的字符串
     * @return 如果字符串包含重复或递增的字符，则返回true；否则返回false
     */
    public static boolean containsRepeatingOrIncrementalChars(String str) {
        int length = str.length();
        if (length < 3) {
            return false;
        }
        int[] asciiArray = convertToAsciiArray(str);
 
        for (int i = 0; i < asciiArray.length; i++) {
            if (i >= asciiArray.length - 2) {
                break;
            }
            int current = asciiArray[i];
            int next = asciiArray[i + 1];
            int afterNext = asciiArray[i + 2];
            // 校验重复或递增的数字或字母
            if ((next == current + 1 && afterNext == next + 1) || (current == next && next == afterNext)) {
                return true;
            }
        }
 
        for (String symbol : symbolSubstrings) {
            if (str.contains(symbol)) {
                return true;
            }
        }
        return false;
    }
 
    /**
     * 将字符串按指定长度拆分成子串
     *
     * @param str             要拆分的字符串
     * @param substringLength 子串的长度
     * @return 拆分后的子串列表
     */
    public static List splitStringIntoSubstrings(String str, int substringLength) {
        List substrings = new ArrayList<>();
 
        for (int i = 0; i < str.length(); i++) {
            if (i + substringLength > str.length()) {
                break;
            }
            int endIndex = Math.min(i + substringLength, str.length());
            String substring = str.substring(i, endIndex);
            substrings.add(substring);
        }
 
        return substrings;
    }
 
    /**
     * 将字符串转换为ASCII码数组
     *
     * @param str 要转换的字符串
     * @return ASCII码数组
     */
    public static int[] convertToAsciiArray(String str) {
        int[] asciiArray = new int[str.length()];
 
        for (int i = 0; i < str.length(); i++) {
            asciiArray[i] = (int) str.charAt(i);
        }
 
        return asciiArray;
    }
 
    public static void main(String[] args) {
        System.out.println(containsRepeatingOrIncrementalChars("abc3132132"));    // true
        System.out.println(containsRepeatingOrIncrementalChars("123fasfadfas")); // true
        System.out.println(containsRepeatingOrIncrementalChars("!@#dfafa"));      // true
        System.out.println(containsRepeatingOrIncrementalChars("aabc"));          // true
        System.out.println(containsRepeatingOrIncrementalChars("fas12@##"));      // false
    }
}