打印出一个字符串的所有组合的递归方式

public class AllString {

    public static void main(String[] args){

        new AllString().all("abc123");

    }

     

    public void all(String str){

        all(str,"");

    }

    public void all(String str , String subStr){

        if(str.length()==0){

            System.out.println(subStr);

        }else{

            for(int i=0;i<str.length();i++){

                all(str.substring(1),subStr + str.charAt(0));

                str = str.substring(1) + str.charAt(0);

            }

        }

    }

}

转载于:https://www.cnblogs.com/tqyysm/p/9658643.html