Go语言视频零基础入门到精通

小小未果儿

class subfunctionApp1{

  static  String[] permutationCurrent;

  static  String[] permutationPrivious;

  static  String permutation;

  static  char[] permutationCurrentChar;

  public static void main(String[]args){

    String[] arr ;

    arr  =subfunction(2);

    for(int i = 0;i<arr.length;i++){

     System.out.print(arr+" ");}

     }

  public static String[] subfunction(int k){

     int l,i,j;

     int time = -1;

    if(k>1){

     permutationCurrent = new String[k*(k-1)];

     for(l = 0;l<=(k-2)*(k-1);l++){         

     permutationCurrentChar = new char[k];

     permutationPrivious =  subfunction(k-1);

     char[] array=permutationPrivious[l].toCharArray();

     for(i = 0;i<array.length;i++){

      permutationCurrentChar = array;}

     for(i = 0;i<=k-1;i++){

       if(i<(k-1)){

       for(j = k-1;j>i;j--){

         permutationCurrentChar[j] = permutationCurrentChar[j-1];}}

       permutationCurrentChar = (char)2;

       permutation = new String(permutationCurrentChar);

       System.out.println(permutation);

       permutationCurrent[++time] = permutation;}}}

    else if(k==1){

      permutationCurrent = new String[k];

      permutationCurrent[0] ="1"; }

    return permutationCurrent;}

    }

//总是返回空，神烦，希望大神帮我。