Java演算法 機率演算法（蒙特卡洛機率演算法求圓周率）

代碼：

package com.xu.main;import java.util.Scanner;public class P9_1 {static double MontePI(int n) {double PI;double x, y;int i, sum;sum = 0;for (i = 1; i < n; i++) {x = Math.random();y = Math.random();if ((x * x + y * y) <= 1) {sum++;}}PI = 4.0 * sum / n;return PI;}public static void main(String[] args) {int n;double PI;System.out.println("蒙特卡洛機率演算法計算圓周率:");Scanner input = new Scanner(System.in);System.out.println("輸入焦點的數量：");n = input.nextInt();PI = MontePI(n);System.out.println("PI="+PI);}}

運行結果