HDOJ2070 Fibbonacci Number

Fibbonacci Number

Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)

Total Submission(s): 26638    Accepted Submission(s): 12205


[align=left]Problem Description[/align]
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.

 

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

[align=left]Output[/align]
Print out the answer in a single line for each test case.
 

[align=left]Sample Input[/align]

3
4
5
-1

 

[align=left]Sample Output[/align]

2
3
5

HintNote:
you can use 64bit integer: __int64

 

import java.util.Scanner;

public class Main{
private static Scanner scanner;
public static void main(String[] args) {
scanner = new Scanner(System.in);
while(scanner.hasNext()){
int n=  scanner.nextInt();
if(n == -1){
break;
}

//打表
long arr[] = new long[51];
arr[0] = 0;
arr[1] = 1;
for (int i = 2; i < arr.length; i++) {
arr[i] = arr[i-1]+arr[i-2];
}
//输出
System.out.println(arr
);
}
}
}