字符串去重

Posted 2020-10-07

public class Main{
    public static void main(String[] args) {
        String string = "afjhafadfgfas";
        String string1 = RemoveDuplication(string);
        System.out.println(string1);
    }

    public static String RemoveDuplication(String string) {
        //创建一个数组用于存放没有重复的字符串
        List list = new ArrayList();
        for (int i = 0; i < string.length(); i++) {
            //如果list已经有该字符了，则调到下一次循环
            if (list.contains(string.charAt(i))) {
                continue;
            } else {
                //否则都是不重复的字符，加入list中
                list.add(string.charAt(i));
            }
        }
        return list.toString();

    }
}