Question

How to find the smallest number that is evenly divisible by all of the numbers from 1 to 10 in Swift

Answer 1

import Foundation

func lcm(_ a: Int, _ b: Int) -> Int {
    var lmc = max(a, b) // Start with the greater of the two numbers

    // Loop indefinitely until we find the LCM
    while lmc % a != 0 || lmc % b != 0 {
        lmc += 1 // Increment and check the next number
    }

    return lmc // Return the LCM
}

var result = 1

// Iterate through numbers 1 to 10
for i in 1...10 {
    result = lcm(result, i) // Update result with LCM of current range
}

print("The Least Common Multiple (LCM) of numbers from 1 to 10 is: \(result)")



/*
run:

The Least Common Multiple (LCM) of numbers from 1 to 10 is: 2520

*/

 

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