Swift - 使用arc4random()、arc4random_uniform()取得随机数

Arc4random() , the global function generates a 10-digit random integer (UInt32). The maximum value it generates is 4294967295 (2^32 - 1), and the minimum value is 0.。

1、The following is to use the arc4random function to find a random number from 1 to 100 (including 1 and 100)

    let temp = Int(arc4random()%100)+1

2、The following is to use the arc4random_uniform function to find a random number from 1 to 100 (including 1 and 100)

    let temp = Int(arc4random_uniform(100))+1

Next, the interval operator will be updated.(... and ..<)

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arc4random() 这个全局函数会生成10位数的随机整数（UInt32）。其生成的最大值是4294967295（2^32 - 1），最小值为0。

1、下面是使用arc4random函数求一个1~100的随机数（包括1和100）

    let temp = Int(arc4random()%100)+1

2、下面是使用arc4random_uniform函数求一个1~100的随机数（包括1和100）

    let temp = Int(arc4random_uniform(100))+1

接下来会更新区间运算符(... and ..<)