用java实现费波那契数列的前n项和

import java.util.Scanner; /** * FaibonacciNumber.java * @author anyunpei 2018年7月22日下午3:54:11 * 计算faibonacci数列之和 */ public class FaibonacciNumber { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); int n = scanner.nextInt(); int[] a = new int[n]; a[0] = 0; a[1] = 1; System.out.println(a[0] + "\n" + a[1]); for (int i = 2; i < n; i++) { a[i] = a[i - 1] + a[i - 2]; if (a[i] < 0) { System.out.println("请缩小此数列的项数，数列之和已溢出" + "最好保证在（" + i + "）项之内"); return; } System.out.println(a[i]); } } }