动态规划公式: feiBo[i] = feiBo[i - 1] + feiBo[i - 2];
import java.util.Scanner; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); // 注意 hasNext 和 hasNextLine 的区别 while (in.hasNextInt()) { // 注意 while 处理多个 case int a = in.nextInt(); int[] feiBo = new int[a]; feiBo[0] = 1; feiBo[1] = 1; for (int i = 2; i < a; i++) { feiBo[i] = feiBo[i - 1] + feiBo[i - 2]; } System.out.println(feiBo[a - 1]); } } }