可计算任意位水仙花数

复制代码 代码如下:

public static void main(String[] args) {

int max = 10;

for (int len = 1; len <= max; len++) {

System.out.println(getNarc(len, ""));

}

}

static StringBuffer strb = new StringBuffer();

static String getNarc(int len, String start) {

for (int basenum = 1; basenum <= 9; basenum++) {

if (len == 2 || len == 1) {

StringBuffer tmpbuf = new StringBuffer();

tmpbuf.append(start);

for (int j = 0; j < len; j++) {

tmpbuf.append(basenum);

}

tmpbuf.append(new StringBuffer(start).reverse().toString());

strb.append(tmpbuf);

strb.append("n");

// System.out.println(tmpbuf);

} else if (len > 2) {

String nextStr = "";

if (null != start) {

nextStr = start + basenum;

} else {

nextStr = Integer.toString(basenum);

}

getNarc(len - 2, nextStr);

}

}

return strb.toString();

}