在Swift中生成两个整数之间的随机值 [英] Generating random values in Swift between two integer values

问题描述

我正在尝试生成两个整数之间的随机值.我已经尝试过了，从0开始，

I'm trying to generate random values between two integers. I've tried this, which starts from 0,

let randomNumber = arc4random_uniform(10)
println(randomNumber)

但是我需要10到50之间的值.

But I need a value between 10 and 50.

推荐答案

尝试一下

let randomNumber = arc4random_uniform(40) + 10
println(randomNumber)

一般形式

let lower : UInt32 = 10
let upper : UInt32 = 50
let randomNumber = arc4random_uniform(upper - lower) + lower
println(randomNumber)

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