技術標籤：Swift演算法

程式碼：

class Pi{
    public static func caculate() -> Double{
        let n = 1000000
        var k = 0
        for _ in 1..<n {
            let x: Double = Double(arc4random_uniform(10000))
            let y: Double = Double(arc4random_uniform(10000))
            if (x*x + y*y) <= 1 {
                k =
 
 k + 1
            }
        }
        let result: Double = Double((4 * k)) / Double(n)
        return result
    }
}

print("Pi is: " + String(Pi.caculate()))

說明：這裡的n為模擬投擲的次數，這裡為1000000。讀者可調控n的值來提高精度。