Swift-use Arc4random (), Arc4random_uniform () to get random numbers

Arc4random () This global function generates a 9-digit random integer

1, the following is the use of the Arc4random function to find a 1~100 random number (including 1 and 100)

1	vartemp:Int = Int(arc4random()%100)+1

2, the following is the use of the Arc4random_uniform function to find a 1~100 random number (including 1 and 100)

1	vartemp:Int = Int(arc4random_uniform(100))+1

Swift-use Arc4random (), Arc4random_uniform () to get random numbers