Java判断字符串是否有重复

检测是否重复:

    public static boolean checkDifferent(String iniString) {
        boolean isbool = false;
        char[] chars = iniString.toCharArray();
        for (int i = 0; i < chars.length; i++) {
            for (int j = i + 1; j < chars.length; j++) {
                if (chars[i] == chars[j]) {
                    isbool = true;
                    return isbool;
                } else {
                    isbool = false;
                }
            }
        }
        return isbool;
    }

输出重复:

public static void repeat_find( String s) {
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            for (int j = i + 1; j < s.length(); j++) {
                if (s.charAt(j) == c) {
                    System.out.println("找到了重复的字符为：" + c);
                }
            }
        }
    }