Question

How to pick a random index from an array in Swift

Answer 1

import Foundation

let arr = ["swift", "c", "c++", "python", "java", "rust"]

// Seeds the random number generator using the current time
srandom(UInt32(NSDate().timeIntervalSince1970))

// Picks a random index from the array and prints the selected item.
print(arr[random() % arr.count]);
 
 
 
/*
run:
 
java
 
*/

 

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Answer 2

import Foundation

let arr = ["swift", "c", "c++", "python", "java", "rust"]

// Seeds the random number generator using the current time
srandom(UInt32(NSDate().timeIntervalSince1970))

// Picks a random element and prints it
if let randomChoice = arr.randomElement() {
    print(randomChoice)
}
 
 
 
/*
run:
 
python
 
*/

 

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