HDU 2070 JAVA

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本文介绍了一个生成Fibonacci数列的Java程序，该程序能够处理0到50之间的输入值，通过迭代的方式计算出指定位置的Fibonacci数，并提供了一个样例输入输出以验证程序的正确性。

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Problem Description
Your objective for this question is to develop a program which will generate a fibbonacci number. The fibbonacci function is defined as such:

f(0) = 0
f(1) = 1
f(n) = f(n-1) + f(n-2)

Your program should be able to handle values of n in the range 0 to 50.

Input
Each test case consists of one integer n in a single line where 0≤n≤50. The input is terminated by -1.

Output
Print out the answer in a single line for each test case.

Sample Input
3
4
5
-1

Sample Output
2
3
5

import java.util.Scanner;

//Wrong Answer
public class Main {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            long a[]=new long  [100];
            for(int i=2;i<a.length;i++){
                a[0]=0;a[1]=1;
                a[i]=a[i-1]+a[i-2];
            }
            int n = sc .nextInt();
            if(n==-1){
                break;
            }
            System.out.println(a[n]);
        }
    }

}