关于字符串中是否包含另一个字符串的实现

Hello World中是否包含这样的字符串HelloWd,一般会使用多次循环来遍历判断是否存在某个字符.下面我通过使用正则表达式的思想来实现这个功能

public static void main(String args[]) {String stringStr = "CDMter";String key = "CaseDoesMatter";judgeSequence(stringStr, key);}public static void judgeSequence(String s, String t) {String regex = "";for (int i = 0; i < s.length() - 1; i++) {regex = regex + s.charAt(i) + "[a-zA-Z]*";}regex += s.charAt(s.length() - 1);Pattern pt = Pattern.compile(regex);Matcher mch = pt.matcher(t);if (mch.find()) {System.out.println("YES");} else {System.out.println("NO");}}