问题2: 打印"水仙花数 "_JAVA_编程开发_程序员俱乐部

class="java">
public class Daffodils {
	public static void main(String[] args) {
		for (long n = 100; n < 1000; n++) {
			if (match(n)) {
				System.out.print(n + "\t");
			}
		}
	}

	private static boolean match(long n) {
		// 数字位数
		int count = (n + "").length();
		// 每一位数字
		long temp = 0;
		// 辗转相除的余数，即由数字分裂得到
		long num = n;
		// 每一位数字的count次方和
		long sum = 0;
		for (int i = count; i > 0; i--) {
			temp = num / (long) Math.pow(10, i - 1);
			num = num % (long) Math.pow(10, i - 1);
			sum += (long) Math.pow(temp, count);
		}
		return sum == n;
	}
}