这个java程序问题出在哪里？

Question

package exercise_9;
public class Exercise9_29 {

public static void main(String[] args) {

    java.util.Scanner input = new java.util.Scanner(System.in);
    System.out.println("Please enter am array and its split:");
    String s1 = input.next();
    System.out.println("Input split:");
    String s2 = input.next();
    String[] result=split(s1, s2);
    for (int i = 0; i < split(s1, s2).length; i++) {
        if (result[i] != null) {
            System.out.print(result[i]+" ");
        }
    }

}

public static String[] split(String s1, String s2) {
    String[] result = new String[s1.length()];
    int t = 0;
    for (int i = 0; i < s1.length(); i++) {
        for (int j = 0; j < s2.length(); j++) {
        if (s1.charAt(i)==s2.charAt(j)) {
            result[t++]=String.valueOf(s1.charAt(i));
        }else if (s1.charAt(i)!=s2.charAt(j)) {
            result[t]+=String.valueOf(s1.charAt(i));
        }
        }

    }
    return result;

}

}

要求自己写一个String类里面的split方法返回由分隔符分隔开的字符串同时返回分割符，例如输入?dwqdwq#das? ?#
返回? dwqdwq # das ?
但是我的程序不输出字符串只输出分隔符，求解释

Answer 1

帮你修改了下，有好几个错误。因为我是C#，但是代码你可以对照修改，调试通过。

         public static string[] split(string s1, string s2)
        {
            string[] result = new string[s1.Length];
            int t = 0;
            for (int i = 0; i < s1.Length; i++)
            {
                for (int j = 0; j < s2.Length; j++)
                {
                    if (s1[i] == s2[j])
                    {
                        result[++t] += s1[i].ToString();
                        t++; i++;
                    }
                }
                result[t] += s1[i].ToString();
            }
            return result;
        }

        string[] result = split("hello#world?hello#kitty", "#?");
        foreach (string s in result)
            Console.WriteLine(s);

输出
hello
#
world
?
hello
#
kitty

Press any key to continue . . .