public class Fibonacci { public static int fibonacci(int n) { if (n <= 1) { return n; } int prev = 0; int current = 1; for (int i = 2; i <= n; i++) { int next = prev + current; prev = current; current = next; } return current; } public static void main(String[] args) { int n = 10; // 求第10项的斐波那契数 int result = fibonacci(n); System.out.println("第 " + n + " 项的斐波那契数是：" + result); } }

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