b. 斐波那契數列(Fibonacci Sequence) 實現一個函式,計算斐波那契數列的第 n 項。
plaintextCopy code
Input: 一個非負整數 n Output: 斐波那契數列的第 n 項
解答程式碼:
import java.util.Scanner;
/**
* @Author LIJIAN
* @Date 2024/6/10 21:22
*/
public class FibonacciSequence {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("請輸入要計算的斐波那契數列的項數:");
int n = scanner.nextInt();
int result = Fibonacci(n);
System.out.println("斐波那契數列的第 " + n + " 項是:" + result);
}
public static int Fibonacci(int n) {
if (n <= 1) {
return n;
}
int num1 = 0;
int num2 = 1;
int FibonacciSum = 0;
for (int i = 2; i <= n; i++) {
FibonacciSum = num1 + num2;
num1 = num2;
num2 = FibonacciSum;
}
return FibonacciSum;
}
}