Question

How to get the first and the last digit of a number in Swift

Answer 1

import Foundation

func getFirstDigit(_ number: Int) -> Int {
    var number = abs(number)
    
    while number >= 10 {
        number /= 10
    }
    
    return number
}

let number = 87354

let firstDigit = getFirstDigit(number)
print(firstDigit)

let lastDigit = number % 10
print(lastDigit)



/*
run:

8
4

*/

 

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