怎么做的,希望各位帮一下一下

你用JAVA写一个26字母和0-9数字 不同长度组合（设置一个长度 6 ，比如aabb99等的全部组合输出,顺序不同也算）的输出

char 数组 存入 你需要的字符
在就一直循环？

    String[] lt = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","0","1","2","3","4","5","6","7","8","9"};
        StringBuffer stringBuffer = new StringBuffer();
        for (int i = 0; i < lt.length; i++) {
            for (int j = 0; j < lt.length; j++) {
                for (int k = 0; k < lt.length; k++) {
                    for (int l = 0; l < lt.length; l++) {
                        for (int m = 0; m < lt.length; m++) {
                            for (int n = 0; n < lt.length; n++) {
                                stringBuffer.append(lt[i]).append(lt[j]).append(lt[k])
                                        .append(lt[l]).append(lt[m]).append(lt[n]);
                                System.out.println(stringBuffer.toString());
                                stringBuffer.setLength(0);
                            }
                        }
                    }
                }
            }
        }

不清除你要做什么，但是如果要输出所有结果是36的6次方个。。。。

你这个是不是面试题